Below are recent papers I wrote or co-wrote. The final version of the papers can be found where they are listed. (Note: I am currently updating/formatting the page) (I will upload the papers I submitted for publication very soon) (Uploaded working papers and my Ph.D. dissertation can be found at the bottom)
Last updated: Aug. 2, 2021
Overview
Scopus: h-index = 36 (34 without self-citations – at least 2 papers are missing from Scopus)
Scopus: Citations = 6,554 (5,830 without self-citations)
Web of Science: 5,750 (5,065 without self-citations) (based on 136 papers – search under “Dominique Lord,” Beta search; I will not update the numbers until all my papers are merged together) (I am waiting for combining the two authors with my name into one.)
Web of Science: h-index = 33
Google Scholar: h-index = 49; i10-index = 136
Google Scholar: Citations = 12,771 (https://scholar.google.com/citations?user=A1GQZYgAAAAJ&hl=en)
Microsoft Academic: Citations = 11,387 (based on 235 papers – some papers are duplicates or from other authors) (https://academic.microsoft.com/#/detail/2122696152)
Top 5 most cited author in Accident Analysis & Prevention since 2005 (28 papers) (was 1st for several years). Second most cited paper in AA&P since 2005 (Poisson, Poisson-gamma and zero-inflated regression models of motor vehicle crashes: balancing statistical fit and theory) (was 1st for 7 years; according to Microsoft Academic, this paper is the third most cited paper on a per year basis in the history of Accident Analysis & Prevention). This paper titled “The Statistical Analysis of Highway Crash-Injury Severities: A Review and Assessment of Methodological Alternatives” is actually is the second most cited paper on a per year basis in the history of Accident Analysis & Prevention.
Made the preliminary list of the most influential (number of papers for high citations) researchers in my field on the Thomson Reuters Community. Unfortunately, I was excluded from the final list since TR changed the selection criteria to simplify the process. Since I publish in different fields (engineering, social science, economics/management, etc.), all my citations are split among the journals associated with these different fields, which reduces the impact of my research. In fact, all highly-cited transportation engineering professors who were on the preliminary list have also been excluded. (June 10, 2014)
Books, Book Chapters, and Manuals
International Encyclopedia of Transportation
Shirazi, M., and D. Lord (2021) Use/analysis of crash data and under reporting of crashes. International Encyclopedia of Transportation, Volume 2: Transport Safety and Security, pp. 726-730. (https://doi.org/10.1016/B978-0-08-102671-7.10132-0)
The Study of Crime and Place: A Methods Handbook Edited by Liz Groff and Cory Haberman (Temple University Press).
Levine, N., and D. Lord (2021) Count Regression Modeling, forthcoming chapter.
Levine, N., and D. Lord (2021) Supplemental Material for Count Regression Models, forthcoming appendix.
Highway Safety Analytics and Modeling (Now available)
Safe Mobility
Book titled “Safe Mobility: Challenges, Methodology and Solutions,” co-edited by Dr. Dominique Lord and Dr. Simon Washington (primary editors), as part of the Emerald Transport and Sustainability is available here:
Volume 11: Challenges, Methodology and Solutions (Order on Amazon)
Buying individual chapters at Emerald
CrimeStat IV (January 15, 2014 – all chapters were peer-reviewed) https://nij.ojp.gov/topics/articles/crimestat-spatial-statistics-program-analysis-crime-incident-locations
Levine, N., and D. Lord (2013) CrimeStat IV: Chapter 15 – OLS Regression Modeling (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Chapter%252015.pdf
Lord, D., B.-J. Park, and N. Levine (2013) CrimeStat IV: Chapter 16 – Poisson Regression Modeling (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Chapter%252016.pdf
Levine, N., D. Lord, B.-J. Park, S. Geedipally, H. Teng, and L. Sheng (2013) CrimeStat IV: Chapter 17 – Estimating Complex Models with Markov Chain Monte Carlo Simulation (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Chapter%252017.pdf
Levine, N., D. Lord, and B.-J. Park (2013) CrimeStat IV: Chapter 18 – Binomial Regression Modeling (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Chapter%252018.pdf
Levine, N., D. Lord, B.-J. Park, S. Geedipally, H. Teng, and L. Sheng (2013) CrimeStat IV: Chapter 19 – Spatial Regression Modeling (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Chapter%252019.pdf
Levine, N., D. Lord, B.-J. Park, S. Geedipally, H. Teng, L. Sheng, and I. Cahill (2013) CrimeStat IV: Chapter 20 – The CrimeStat Regression Module (Part V: Spatial Modeling II). Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%20IV%20Chapter%2020.pdf
Lord, D., and B.-J. Park (2013) CrimeStat IV: Appendix C – Negative Binomial Regression Models and Estimation Methods. Ned Levine & Associates and the National Institute of Justice, Washington, D.C. https://nij.ojp.gov/sites/g/files/xyckuh171/files/media/document/CrimeStat%2520IV%2520Appendix%2520C.pdf
CrimeStat 3.3
Levine, N., D. Lord, and B.-J. Park (2010) CrimeStat Version 3.3 Update Notes: Part 2: Regression Modeling. The National Institute of Justice, Washington, D.C. (http://www.icpsr.umich.edu/CrimeStat/)
Lord, D., and B.-J. Park (2010) Appendix D – Negative Binomial Regression Models and Estimation Methods. In CrimeStat Version 3.3 Update Notes: Part 2: Regression Modeling. The National Institute of Justice, Washington, D.C.
Peer-Reviewed Publications
Submitted for publication
Khodadadi, A., M. Shirazi, S. Geedipally, and D. Lord (2021) A Comparative Study to Evaluate the Application of Different Negative Binomial-Lindley Parameterizations in Crash Data Modeling. Paper submitted for publication.
Iio, K., Y. Zhang, and D. Lord (2021) A Method to Estimate Traffic Volume Based on Mobility Footprint Cardinality. Paper submitted for publication.
Islam, A.S.M., M. Shirazi, and D. Lord (2021) Finite Mixture Negative Binomial-Lindley to Model Heterogeneous Crash Data with Many Zero Observations. Paper submitted for publication.
Sohrabia, S., B. Dadashova, D. Lord, H. Khreis, I.N. Sener, and J. Zmu (2021) Safety and Equity Impacts of Automated Vehicles: A Quantification Framework and Empirical Analysis. Currently revising the paper.
Sohrabi, S., and D. Lord, 2020. Navigating to Safety: Necessity, Requirements, and Barriers to Considering Safety in Route Finding. Paper submitted for publication. (Revised Version)
Published, in Press (Forthcoming) or Conference Proceedings
Yang, J., X. Guo, M. Xu, L. Wang, and D. Lord (2021) Alcohol-impaired Motorcyclists versus Car Drivers: A Comparison of Crash Involvement and Legal Consequence from Adjudication Data. Journal of Safety Research, forthcoming.
Intini, P., Berloco, N., Cavalluzzi, G., Colonna, P., Lord, D., Ranieri, V., Colonna, P. (2021) The variability of urban safety performance functions for different road elements: an Italian case study. European Transport Research Review, Vol. 13 No. 1, pp. 1-14. (Open Source: https://doi.org/10.1186/s12544-021-00490-6) (Paper presented at the 99th Annual Meeting of the Transportation Research Board.)
Li, W., S.M. Mousavi, B. Dadashova, D. Lord and B. Wolshon (2021) Toward a Crowdsourcing Solution to Identify High-Risk Highway Segments Through Mining Driving Jerks. Accident Analysis & Prevention, Vol. 155, 106101. (https://doi.org/10.1016/j.aap.2021.106101)
Khodadadi*, A., I. Tsapakis, S. Das, D. Lord, and Y. Li (2021) Application of Different Negative Binomial Parameterizations to Develop Safety Performance Function for Non-Federal Aid System Roads. Accident Analysis & Prevention, Vol. 156, 106103. (https://doi.org/10.1016/j.aap.2021.106103)
Kuo, P.-F., and D. Lord (2021) A Visual Approach for Defining the Spatial Relationships among Crashes, Crimes, and Alcohol Retailers: Applying the Color Mixing Theorem to Define the Colocation Pattern of Multiple Variables. Accident Analysis & Prevention, Vol. 154, 106062. (https://doi.org/10.1016/j.aap.2021.106062)
Sohrabi, S., A. Khodadadi, S.M. Mousavi, B. Dadashova, and D. Lord (2021) Quantifying Autonomous Vehicle Safety: A Scoping Review of the Literature, Evaluation of Methods, and Directions for Future Research. Accident Analysis & Prevention, Vol. 152, 106003. (https://doi.org/10.1016/j.aap.2021.106003)
Iio, K., Guo, X., Lord, D. (2021) Examining Driver Distraction as a Function of Driving Speed: An Observational Study using Disruptive Technology and Naturalistic Data. Accident Analysis & Prevention, Vol. 153, 105983. (https://doi.org/10.1016/j.aap.2021.105983) (Paper presented at the 99th Annual Meeting of the Transportation Research Board.)
Mousavi, S.M., D. Lord, S.R. Mousavi, and M. Shirinzad (2021) Investigating the Safety and Operational Benefits of Mixed Traffic Environments with Different Automated Vehicles Market Penetration Rates in the Proximity of a Driveway on an Urban Arterial Safety Performance of Autonomous Vehicles on an Urban Arterial in Proximity of a Driveway. Accident Analysis & Prevention, Vol. 152, 105982 (https://doi.org/10.1016/j.aap.2021.105982) (Paper presented at the 99th Annual Meeting of the Transportation Research Board.) (will upload version of the paper very soon)
Shirazi, M., Lord, D., Geedipally, S.R. (2020) A Simulation Analysis to Study the Temporal and Spatial Aggregations of Safety Datasets with Excess Zero Observations. Transportmetrica – Part A, Vol. 17, No. 4, pp. 1305-1317. (https://doi.org/10.1080/23249935.2020.1858993) (paper also presented at the 99th Annual Meeting of the Transportation Research Board)
Sohrabi, S., H. Khreis, and D. Lord (2020) Impacts of Autonomous Vehicles on Public Health: A Conceptual Model and Policy Recommendations. Sustainable Cities and Society 63, 102457. (https://doi.org/10.1016/j.scs.2020.102457)
Guo, X., L. Wu and D. Lord. (2020) Generalized Criteria for Evaluating Hotspot Identification Methods. Accident Analysis & Prevention 145, 105684. (https://doi.org/10.1016/j.aap.2020.105684) (Link to software program)
Geedipally, S.R., Dash, S., Pratt, M., Lord, D., 2020. Determining Skid Resistance Needs on Horizontal Curves for Different Levels of Precipitation. Transportation Research Record 2674 (9), pp. 358-370.
Geedipally, S.R., Lord, D., Pratt, M., Fitzpatrick, K, Park, E.-S., 2020. Safety Performance of One-Way Arterials. Transportation Research Record 2674 (10), pp. 548–559.
Dadashova, B., Arenas-Ramires, B., Mira-McWillaims, J., Dixon, K., and Lord, D., 2020. Analysis of crash injury severity on two Trans-European Transport Network corridors in Spain using discrete-choice models and random forests. Traffic Injury Prevention 21(3), pp. 228-233. (https://doi.org/10.1080/15389588.2020.1733539)
Kuo, P.-F., and D. Lord (2020) Applying the colocation quotient index to crash severity analyses. Accident Analysis & Prevention, Vol. 135, 105368. (https://doi.org/10.1016/j.aap.2019.105368)
Intini, P., Berloco, N., Cavalluzzi, G., Colonna, P., Lord, D., Ranieri, V., 2020. The Variability of Urban Safety Performance Functions for Different Road Elements: An Italian Case Study. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Iio, K., Lord, D., Zhang, Y., 2020. Average Annual Daily Traffic Estimation by Mobile Device Footprint Cardinality. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Iio, K., Gou, X., Lord, D., 2020. Examining Driver Distraction as a Function of Driving Speed: An Observational Study using Disruptive Technology and Naturalistic Data. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Mousavi, S.M., Lord, D., Mousavi, S.R., Shirinzad, M., 2020. Safety Performance of Autonomous Vehicles on an Urban Arterial in Proximity of a Driveway. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Shimu, T.H., Lord, D., Geedipally, S.R., Wu, L., Wunderlich, R., 2019. Investigating Factors that Contributed to the Large Reduction and Subsequent Increase in Roadway Fatalities in the United States between 2005 and 2016. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Shirazi, M., Lord, D., Geedipally, S.R., 2019. A Simulation Analysis to Study the Temporal and Spatial Aggregations of Safety Datasets with Excess Zero Observations. Paper presented at the 99th Annual Meeting of the Transportation Research Board, Washington, D.C.
Kuo, P.-F., and D. Lord (2019) A Promising Example of Smart Policing: A Cross-national Study of the Effectiveness of a Data-Driven Approach to Crime and Traffic Safety. Case Studies on Transport Policy, Vol. 7, No. 4, pp. 761-771. (https://10.1016/j.cstp.2019.08.005)
Zhao, X., D. Lord, and Y. Peng (2019) Examining Network Segmentation for Traffic Safety Analysis with Data-Driven Spectral Analysis. IEEE Access, Vol. 7, Issue 1, December 2019, pp. 120744-120757 (https://doi.org/10.1109/ACCESS.2019.2937001) (https://ieeexplore.ieee.org/document/8809775)
Sohrabi, S., and D. Lord (2019) Impacts of Red-Light Cameras on Intersection Crash Frequency: A Hierarchical Spatial Model. ITE Journal, Vol. 89, No. 12 (December), pp. 29-36. (2019 ITE D.B. Fambro Award)
Mousavi, S.M., D. Lord, and O.A. Osman (2019) Impact of Urban Arterial Traffic LOS on the Vehicle Density of Different Lanes of the Arterial in Proximity of an Unsignalized Intersection for Autonomous Vehicle vs. Conventional Vehicle Environments. Paper presented at the ASCE International Conference on Transportation & Development, Alexandria, VA, June 9-12, 2019.
Shirazi, M., and D. Lord (2019) Characteristics Based Heuristics to Select a Logical Distribution between the Poisson-Gamma and the Poisson-Lognormal for Crash Data Modelling. Transportmetrica A: Transport Science, Vol 15, Issue 2, pp. 1791-1803. (https://doi.org/10.1080/23249935.2019.1640313)
Ash, J.E., Y. Zou, D. Lord, and Y. Wang (2021) Comparison of Confidence and Prediction Intervals for Different Mixed-Poisson Regression Models. Journal of Transportation Safety and Security, Vol. 13 No. 3, pp. 357-379. (https://doi.org/10.1080/19439962.2019.1638475)
Mao, H., X. Deng, D. Lord, and F. Guo (2019) Adjusting finite sample bias in traffic safety modeling. Accident Analysis & Prevention, Vol. 131, pp. 112-121. (https://doi.org/10.1016/j.aap.2019.05.026)
Ye, X., K. Wang, Y. Zou, and D. Lord (2018) A semi-nonparametric Poisson regression model for analyzing motor vehicle crash data. PLoS One, Vol. 13 No. 5,e0197338. (https://doi.org/10.1371/journal.pone.0197338)
Ye, Z., Xu, Y., and D. Lord (2018) Crash Data Modeling with a Generalized Estimator. Accident Analysis & Prevention, Vol. 117, pp. 340-345. (https://doi.org/10.1016/j.aap.2018.04.026)
Lord, D., and S.R. Geedipally (2018) Safety Prediction with Datasets Characterised with Excess Zero Responses and Long Tails, in Dominique Lord, Simon Washington (ed.) Safe Mobility: Challenges, Methodology and Solutions (Transport and Sustainability, Volume 11) Emerald Publishing Limited, pp. 297 – 323.
Khazraee, S.H., V. Johnson, and D. Lord (2018) Bayesian Poisson Hierarchical Models for Crash Data Analysis: Investigating the Impact of Model Choice on Site-Specific Predictions. Accident Analysis & Prevention, Vol. 117, pp. 181-195. (https://doi.org/10.1016/j.aap.2018.04.016)
Shaon, M.R.R., X. Qin, M. Shirazi, D. Lord, and S. Geedipally (2018) Developing a Random Parameters Negative Binomial-Lindley Model to analyze highly over-dispersed crash count data. Analytic Methods in Accident Research, Vol. 18, pp. 33-44. (https://doi.org/10.1016/j.amar.2018.04.002) (paper presented at TRB).
Shirazi, M., and D. Lord (2017) An Approach Towards Automation Of Model Selection. Poster presented at the 2017 INFORMS Annual Meeting, Oct. 22nd – Oct. 25th, 2017, Houston, TX (not a paper)
Shirazi, M., and D. Lord (2018) Characteristics Based Heuristics to Select a Logical Distribution between the Poisson Gamma and the Poisson Lognormal for Crash Data Modeling. Paper presented at the 97th Annual Meeting of the TRB.
Flannagan, C., R. Wunderlich, S.R. Geedipally, D. Lord, and D. Blower (2018) Using crash prediction models that incorporate economic factors for state highway safety planning. Paper presented at the 97th Annual Meeting of the TRB.
Geedipally, S.R., D. Blower, C. Flannagan, R. Wunderlich, and D. Lord (2018) In-depth Investigation of Factors That Contributed to the Decline in Fatalities from 2008 to 2011 in the United States. Paper presented at the 97th Annual Meeting of the TRB.
Ash, J.E., Y. Zou, B.-J. Park, D. Lord, and Y. Wang (2017) Application of Finite Mixture of Negative Binomial Regression Models in Estimating Empirical Bayes Estimates. Journal of Applied Statistics, Vol. 45, No. 9, pp. 1652-1669. (http://dx.doi.org/10.1080/02664763.2017.1389863)
Geedipally, S.R., M. Pratt, and D. Lord (2019) Effects of Geometry and Pavement Friction on Horizontal Curve Crash Frequency. Journal of Transportation Safety and Security 11(2), pp. 167-188. (http://dx.doi.org/10.1080/19439962.2017.1365317)
Kuo, P.-F., and D. Lord (2017) Estimating the Safety Impacts in Before-After Studies using the Naïve Adjustment Method. Transportmetrica A: Transport Science, Vol. 13, No. 10, pp. 915-931. Spreadsheet to calculate the adjusted estimate. (http://dx.doi.org/10.1080/23249935.2017.1352627) (A previous version was presented at the 93rd Annual Meeting of the TRB).
Shirazi, M., S.S. Dhavala, D. Lord, and S.R. Geedipally (2017) A Methodology to Design Heuristics for Model Selection Based on Characteristics of Data: Application to Investigate When the Negative Binomial Lindley (NB-L) is Preferred Over the Negative Binomial (NB). Accident Analysis & Prevention, Vol. 107, pp. 186-194. (http://dx.doi.org/10.1016/j.aap.2017.07.002)
Xavier*, C., D. Lord, C. Silvestri Dobrovolny, and R. Bligh (2017) Evaluating the Relevancy of Current Crash Test Guidelines for Roadside Safety Barriers on High Speed Roads. Transportation Research Circular Number E-C220, First International Roadside Safety Conference (June 2017), Transportation Research Board, pp. 452-465. (full peer-reviewed) (http://onlinepubs.trb.org/onlinepubs/circulars/ec220.pdf)
Wu, L., and D. Lord (2017) Examining the Influence of Link Function Misspecification in Conventional Regression Models for Developing Crash Modification Factors. Accident Analysis & Prevention, Vol. 102, pp. 123-135. (http://dx.doi.org/10.1016/J.aap.2017.02.012)
Shirazi, M., S.R. Geedipally, and D. Lord (2017) A Monte Carlo Simulation Analysis for Validating the SDF Calibration Methodology and Determining the Sample Size Requirements. Accident Analysis & Prevention, Vol. 98, pp. 303-311. (http://dx.doi.org/10.1016/j.aap.2016.10.004) (Presented at the 96th Annual Meeting of the TRB)
Wu, L., D. Lord, and S.R. Geedipally (2017) Developing Crash Modification Factors for Horizontal Curves on Rural Two Lane Undivided Highways using a Cross-Sectional Study. Transportation Research Record 2636, pp. 53–61. (http://dx.doi.org/10.3141/2636-07) (Presented at the 96th Annual Meeting of the TRB.)
Geedipally, S.R., M. Shirazi, and D. Lord (2017) Exploring the Need for Region-Specific Calibration Factors. Transportation Research Record 2636, pp. 73–79. (Presented at the 96th Annual Meeting of the TRB.) (http://dx.doi.org/10.3141/2636-09)
Park, B-J., D. Lord, and L. Wu (2016) Finite Mixture Modeling Approach for Developing Crash Modification Factors in Highway Safety Analysis. Accident Analysis & Prevention, Vol. 97, pp. 274-287. (http://dx.doi.org/10.1016/j.aap.2016.10.023)
Mitra, S., S.R. Geedipally, and D. Lord (2016) Safety analysis of urban signalized intersections in Kolkata, India using a combined proactive and reactive approach. Presented at the 96th Annual Meeting of the TRB.
Shirazi, M., S.R. Geedipally, and D. Lord (2016) A Procedure to Determine When Safety Performance Functions Should Be Recalibrated. Journal of Transportation Safety & Security, Vol. 9, No. 4, pp. 459-467. (DOI: http://dx.doi.org/10.1080/19439962.2016.1240734)
Shirazi, M., D. Lord, and S.R. Geedipally (2016) Sample-Size Guidelines for Recalibrating Crash Prediction Models: Recommendations for the Highway Safety Manual. Accident Analysis & Prevention, Vol. 93, pp. 160-168. (DOI: http://dx.doi.org/10.1016/j.aap.2016.04.011)
Shirazi, M., D. Lord, S.S. Dhavala, S.R. Geedipally (2016) A Semiparametric Negative Binomial Generalized Linear Model for Modeling Over Dispersed Count Data with a Heavy Tail: Characteristics and Applications to Crash Data. Accident Analysis & Prevention, Vol. 91, pp. 10-18. (DOI: http://dx.doi.org/10.1016/j.aap.2016.02.020)
Heydari, S., L. Fu, D. Lord, and B.K. Mallick (2016) Multilevel Dirichlet process mixture analysis of railway grade crossing crash data. Analytic Methods in Accident Research, Vol. 9, pp. 27-43. (A shorter version was submitted for TRB – see below)
Imprialou, M-I, M. Quddus, D. Pitfield, D. Lord (2016) Re-visiting crash-speed relationships: A new perspective in crash modelling. Accident Analysis & Prevention, Vol. 86, pp. 173–185. (DOI: http://dx.doi.org/10.1016/j.aap.2015.10.001)
Zha, L., D. Lord, and Y. Zou (2016) The Poisson Inverse Gaussian (PIG) Generalized Linear Regression Model for Analyzing Motor Vehicle Crash Data. Journal of Transportation Safety and Security, Vol. 8, No. 1, pp. 18 – 35. (a previous version was presented at TRB) (DOI: 10.1080/19439962.2014.977502) (http://www.tandfonline.com/doi/abs/10.1080/19439962.2014.977502)
Zou, Y., K. Henrickson, D. Lord, Y. Wang, and K. Xu (2016) Application of Finite Mixture Models for Analyzing Freeway Incident Clearance Time. Transportmetrica A: Transport Science, Vol. 12, No. 2, pp. 99-115.
Ash, J.E., Y. Zou, D. Lord, and Y. Wang (2016) Comparison of Confidence and Prediction Intervals for Different Mixed-Poisson Regression Models. Paper presented at the 95th Annual Meeting of the Transportation Research Board.
Wu, L., and D. Lord (2016) Investigating the Influence of Dependence between Variables on Crash Modification Factors Developed using Regression Models. Paper presented at the 95th Annual Meeting of the Transportation Research Board.
Heydari, S., L. Fu, D. Lord, and B.K. Mallick (2016) A Flexible Modeling Approach Using Dirichlet Process Mixtures: Application to Municipality-Level Railway Grade Crossing Crash Data. Paper presented at the 95th Annual Meeting of the Transportation Research Board.
Shirazi, M., D. Lord, and S.R. Geedipally (2016) Sample-Size Guidelines for Recalibrating Crash Prediction Models: Recommendations for the Highway Safety Manual. Paper presented at the 95th Annual Meeting of the Transportation Research Board.
Lv, J., D. Lord, Y. Zhang, and Z. Chen (2015) Investigating the Peltzman Effects in Adopting Mandatory Seat Belt Laws in the US: Evidence from Non-occupant Fatalities. Transport Policy, Vol. 44, pp. 58-64. (http://dx.doi.org/10.1016/j.tranpol.2015.06.012)
Wu, L., D. Lord, and Y. Zou (2015) Validation of CMFs Derived from Cross Sectional Studies Using Regression Models. Transportation Research Record 2514, pp. 88–96. (Paper presented at the 94th Annual Meeting of the Transportation Research Board) (Young Research Award – TRB Committee ANB20).
Vangala, P., D. Lord, and S.R. Geedipally (2015) Exploring the Application of the Negative Binomial-Generalized Exponential Model for Analyzing Traffic Crash Data with Excess Zeros. Analytic Methods in Accident Research, Vol. 7, pp. 29-36. (http://dx.doi.org/10.1016/j.amar.2015.06.001) (Paper presented at the 94th Annual Meeting of the Transportation Research Board, Washington, D.C.)
Iragavarapu, V., S.H. Khazraee, D. Lord, and K. Fitzpatrick (2015) Pedestrian Fatal Crashes on Freeways in Texas. Paper presented at the 94th Annual Meeting of the Transportation Research Board, Washington, D.C.
Iragavarapu, V., D. Lord, and K. Fitzpatrick (2015) Analysis of Injury Severity in Pedestrian Crashes using Classification Regression Trees. Paper presented at the 94th Annual Meeting of the Transportation Research Board, Washington, D.C.
Zou, Y., L. Wu, and D. Lord (2015) Modeling over-dispersed crash data with a long tail: Examining the accuracy of the dispersion parameter in negative binomial models. Analytic Methods in Accident Research, Vol. 5-6, pp. 1-16. (http://dx.doi.org/10.1016/j.amar.2014.12.002)
Khazraee, S.H., A.J. Saez-Castillo, S.R. Geedipally, and D. Lord (2015) Application of the hyper-Poisson generalized linear model for analyzing motor vehicle crashes. Risk Analysis, Vol. 35, No. 5, pp. 919 – 930. (http://dx.doi.org/10.1111/risa.12296) (Presented at the 93rd Annual Meeting of the TRB)
Peng, Y., D. Lord, and Y. Zou (2014) Applying the Generalized Waring model for investigating sources of variance in motor vehicle crash analysis. Accident Analysis & Prevention, Vol. 73, pp. 20-26. (http://dx.doi.org/10.1016/j.aap.2014.07.031) (Presented at the 93rd Annual Meeting of the TRB.)
Park, B.-J., D. Lord, and C. Lee (2014) Finite Mixture Modeling for Vehicle Crash Data with Application to Hotspot Identification. Accident Analysis & Prevention, Vol. 71, pp. 319-326. (http://dx.doi.org/10.1016/j.aap.2014.05.030)
Flask, T., W. Schneider IV, and D. Lord (2014) A segment level analysis of multi-vehicle motorcycle crashes in Ohio using Bayesian multi-level mixed effects models. Safety Science, Vol. 66, pp. 47-53. (http://dx.doi.org/10.1016/j.ssci.2013.12.006)
Zha, L., D. Lord, and Y. Zou (2014) The Poisson Inverse Gaussian (PIG) Generalized Linear Regression Model for Analyzing Motor Vehicle Crash Data. Presented at the 93rd Annual Meeting of the TRB. (see the latest version of the paper above)
Heydari, S., L.F. Miranda‐Moreno, L. Fu, and D. Lord (2013) How to specify priors for full Bayes road safety studies? 4th International Conference on Road Safety and Simulation, Rome, Oct. 23rd-25th, 2013.
Kuo, P.-F., and D. Lord (2014) Estimating the Safety Impacts in Before-After Studies using the Adjusted Method. Presented at the 93rd Annual Meeting of the TRB (working on a revised version of the paper).
Wu, L., Y. Zou, and D. Lord (2014) Comparison of Sichel and Negative Binomial Models in Hotspot Identification. Transportation Research Record 2460, pp. 107-116. (Presented at the 93rd Annual Meeting of the TRB.)
Geedipally, S.R., J.A. Bonneson, M.P. Pratt, and D. Lord (2014) Injury Severity Analysis of Crashes on Ramps and at Crossroad Ramp Terminals. Transportation Research Record 2435, pp. 37-44. (Presented at the 93rd Annual Meeting of the TRB.)
Hawkins, H.G., P.-F. Kuo, and D. Lord (2014) Statistical Analysis of the Traffic Safety Impacts of On-Premise Digital Signs. Presented at the 93rd Annual Meeting of the TRB, Washington, D.C.
Heydari, S., L.F. Miranda-Moreno, D. Lord, and L. Fu (2013) A Methodology to Estimate and Update SPF Parameters under Limited Data Conditions: A Sensitivity Analysis. Accident Analysis & Prevention, Vol. 64, pp. 41-51. (http://dx.doi.org/10.1016/j.aap.2013.11.001)
Zou, Y., Y. Zhang, and D. Lord (2014) Analyzing Different Functional Forms of the Varying Weight Parameter for Finite Mixture of Negative Binomial Regression Models. Analytic Methods in Accident Research, Vol. 1, pp. 39-52. (http://dx.doi.org/10.1016/j.amar.2013.11.001)
Geedipally, S.R., D. Lord, and S.S. Dhavala (2013) A caution about using the Deviance Information Criterion while modeling traffic crashes. Safety Science, Vol. 62, pp. 495-498. (http://dx.doi.org/10.1016/j.ssci.2013.10.007)
Zou, Y., S.R. Geedipally, and D. Lord (2013) Evaluating the Double Poisson Generalized Linear Model. Accident Analysis & Prevention, Vol. 59, pp. 497-505. (http://dx.doi.org/10.1016/j.aap.2013.07.017) (Paper presented at the 92nd Annual Meeting of the TRB.)
Zou, Y., D. Lord, Y. Zhang, and Y. Peng (2014) Application of the Bayesian Model Averaging in Predicting Motor Vehicle Crashes. Journal of Transportation Statistics, Vol. 10, No. 1, pp. 49-60. (Paper presented at the 91st Annual Meeting of the Transportation Research Board, Washington, D.C.) (I put a link directly to the volume on the BTS website) (This paper is not listed on Scopus)
Ye, F., and D. Lord (2014) Comparing Three Commonly Used Crash Severity Models on Sample Size Requirements: Multinomial Logit, Ordered Probit and Mixed Logit Models. Analytic Methods in Accident Research, Vol. 1, pp. 72-85. (http://dx.doi.org/10.1016/j.amar.2013.03.001) (Paper presented at the 90th Annual Meeting of the TRB.)
Geedipally, S.R., J.A. Bonneson, M.P. Pratt, and D. Lord (2013) Severity distribution function for freeway segments. Transportation Research Record 2398, pp. 19-27. (Paper presented at the 92nd Annual Meeting of the TRB.)
Ko, M., D. Lord, and J. Zietsman (2013) Environmental Conscious Highway Design for Vertical Grades. Transportation Research Record 2341, pp. 53-65. (Paper presented at the 92nd Annual Meeting of the TRB.)
Zou, Y., D. Lord, and Y. Zhang (2013) Comparison of Sichel and Negative Binomial Models in Estimating Empirical Bayes Estimates. Transportation Research Record 2392, pp. 11-21. Paper presented at the 92nd Annual Meeting of the TRB.
Kuo, P.-F., and D. Lord (2013) Accounting for Site-Selection Bias in Before-After Studies for Continuous Distributions: Characteristics and Application Using Speed Data. Transportation Research – Part A, Vol. 49, pp. 256-269. (http://dx.doi.org/doi:10.1016/j.tra.2013.01.023) (Paper presented at the 91st Annual Meeting of the Transportation Research Board)
Ye, Z., Y. Zhang, and D. Lord (2013) Goodness-of-fit testing for accident models with low means. Accident Analysis & Prevention, Vol. 61, pp. 78-86. (http://dx.doi.org/doi:10.1016/j.aap.2012.11.007) (Presented at the 3rd International Conference on Road Safety and Simulation, September 14-16, 2011, Indianapolis, USA.)
Kuo, P.-F., D. Lord, and T.D. Walden (2013) Using Geographical Information Systems to Organize Police Patrol Routes Effectively by Grouping Hot Spots of Crash and Crime Data. Journal of Transport Geography, Vol. 30 (June), pp. 138-148. (http://dx.doi.org/10.1016/j.jtrangeo.2013.04.006) (Presented at the 3rd International Conference on Road Safety and Simulation, September 14-16, 2011, Indianapolis, USA.)
Zou, Y., Y. Zhang, D. Lord, and Y. Peng (2012) Analyzing Different Functional Forms of the Varying Weight Parameter for Finite Mixture of Negative Binomial Regression Models. Paper presented at the 92nd Annual Meeting of the TRB. (another version of the paper that was published in AMAR can be found above)
Kuo, P.-F., Zeng, X., and D. Lord (2012) Guidelines for Choosing Hot-Spot Analysis Tools on Data Characteristics, Network Restrictions, and Time Distributions. Paper presented at the 91st Annual Meeting of the Transportation Research Board.
Zou, Y., Y. Zhang, and D. Lord (2012) Application of finite mixture of negative binomial regression models with varying weight parameters for vehicle crash data analysis. Accident Analysis & Prevention, Vol. 50, pp. 1042-1051. (http://dx.doi.org/doi:10.1016/j.aap.2012.08.004)
Cheng, L., S.R. Geedipally, and D. Lord (2013) Examining the Poisson-Weibull Generalized Linear Model for Analyzing Crash Data. Safety Science, Vol. 54, pp. 38-42. (http://dx.doi.org/10.1016/j.ssci.2012.11.002) (Paper presented at the 91st Annual Meeting of the Transportation Research Board.)
Vieira Gomes, S., S.R. Geedipally, and D. Lord (2012) Estimating the Safety Performance of Urban Intersections in Lisbon, Portugal. Safety Science, Vol. 50, No. 9, pp. 1732-1739. (http://dx.doi.org/10.1016/j.ssci.2012.03.022)
Iragavarapu, I., and D. Lord (2011) Examining potential factors affecting the safety performance and design of exclusive truck facilities. Presented at the 1st Conference of Transportation Research Group (TRG) of India to be held in Bangalore India from December 7-10, 2011.
Lord, D., and P-F. Kuo (2012) Examining the Effects of Site Selection Criteria for Evaluating the Effectiveness of Traffic Safety Improvement Countermeasures. Accident Analysis & Prevention, Vol. 47, pp. 52-63. (http://dx.doi.org/10.1016/j.aap.2011.12.008) (Paper presented at the 90th Annual Meeting of the TRB.)
Howson, J.E., D. Lord, and D. Lance Bullard (2012) The Effect of Driver Height on the Death Rate in Single-Vehicle Rollover Accidents. Paper presented at the 91st Annual Meeting of the Transportation Research Board, Washington, D.C.
Peng, Y., S.R. Geedipally, and D. Lord (2012) Investigating the Effect of Roadside features on Single-Vehicle Roadway Departure Crashes on Rural Two-Lane Roads. Transportation Research Record 2759, pp. 21-29. (Paper presented at the 91st Annual Meeting of the Transportation Research Board.)
Zou, Y., D. Lord, and S.R. Geedipally (2012) Over- and Under-Dispersed Crash Data: Comparing the Conway-Maxwell-Poisson and Double-Poisson Distributions. Paper presented at the 91st Annual Meeting of the Transportation Research Board, Washington, D.C.
Ye, F., T.P. Garcia, M. Pourahmadi, and D. Lord (2012) Extension of a Negative Binomial GARCH Model: Analyzing the Effects of Gasoline Price on Fatal Crashes in Texas. Transportation Research Record 2279, pp. 31-39. (Paper presented at the 91st Annual Meeting of the Transportation Research Board. (Accepted for publication in a TRR)
Ko, M., D. Lord, and J. Zietsman (2012) Environmental Conscious Highway Design for Vertical Crest Curves. Transportation Research Record 2270, pp. 96-106. (Paper presented at the 91st Annual Meeting of the Transportation Research Board)
Patil, S., S.R. Geedipally, and D. Lord (2012) Analysis of Crash Severities using Nested Logit Model- Accounting for the Underreporting of Crash Data. Accident Analysis & Prevention, Vol. 45, pp. 646-653. (http://dx.doi.org/doi:10.1016/j.aap.2011.09.034)
Geedipally, S.R., D. Lord, S.S. Dhavala (2012) The Negative Binomial-Lindley Generalized Linear Model: Characteristics and Application using Crash Data. Accident Analysis & Prevention, Vol. 45, No. 2, pp. 258-265. (http://dx.doi.org/doi:10.1016/j.aap.2011.07.012)
Lord, D., and S. Guikema (2012) The Conway-Maxwell-Poisson Model for Analyzing Crash Data (Discussion of “The COM-Poisson Model for Count Data: A Survey of Methods and Applications” by Sellers, K., Borle, S., and Shmueli, G.”) Discussion paper prepared (by request) for Applied Stochastic Models in Business and Industry, 28 (2), pp. 122-127. (This paper was peer-reviewed) (http://dx.doi.org/doi:10.1002/asmb.937)
Francis, R.A., S.R. Geedipally, S.D. Guikema, S.S. Dhavala, D. Lord, and S. Larocca (2011) Characterizing the Performance of the Conway-Maxwell-Poisson Generalized Linear Model. Risk Analysis, Vol. 32, No.1, pp. 167-183. (http://dx.doi.org/doi:10.1111/j.1539-6924.2011.01659.x)
Lord, D., and S.R. Geedipally (2011) The Negative Binomial‐Lindley Distribution as a Tool for Analyzing Crash Data Characterized by a Large Amount of Zeros. Accident Analysis & Prevention, Vol. 43, No. 5, pp. 1738-1742. (http://dx.doi.org/doi:10.1016/j.aap.2011.04.004)
Savolainen, P.T., F.L. Mannering, D. Lord, and M.A. Quddus (2011) The Statistical Analysis of Highway Crash-Injury Severities: A Review and Assessment of Methodological Alternatives. Accident Analysis & Prevention, Vol. 43, No. 5, pp. 1666-1676. (http://dx.doi.org/10.1016/j.aap.2011.03.025)
Peng, Y., and D. Lord (2011) Applying the latent class growth model into a longitudinal analysis of traffic crashes. Transportation Research Record 2236, pp. 102-109. (Paper presented at the 90th Annual Meeting of the TRB.)
Geedipally, S.R., D. Lord, and G.R.S. Reddy (2011) Evaluating TxDOT’S Safety Improvement Index: a Prioritization Tool. Transportation Research Record 2241, pp. 39-50.
Ye, F., and D. Lord (2011) Investigating the Effects of Underreporting of Crash Data on Three Commonly Used Traffic Crash Severity Models: Multinomial Logit, Ordered Probit and Mixed Logit Models. Transportation Research Record 2241, pp. 51-58.
Geedipally, S.R., and D. Lord (2011) Examining the Crash Variances Estimated by the Poisson-Gamma and Conway-Maxwell-Poisson Models. Transportation Research Record 2241, pp. 59-67.
Stamadiasdis, N., D. Lord, J. Pigman, J. Sacksteder, and W. Ruff (2011) Safety Impacts of Design Element Trade-Offs. ASCE Journal of Transportation Engineering, Vol. 137, No. 5, pp. 333-340. (http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000221)
Ye, Z., D. Veneziano, and D. Lord (2011) Safety Impact of Gateway Monuments. Accident Analysis & Prevention, Vol. 43, No., 1, pp. 290-300. (http://dx.doi.org/10.1016/j.aap.2010.08.027)
Chanam, L., K. Meghan Wieters, C. Giusti, and D. Lord (2010) The Environment and Obesity among Latino Adults: A case study exploring the roles of environments in promoting physical activity and reducing obesity among colonia residents. Paper presented at the “Obesity Research Workshop” by the Inter-University Program for Latino Research, held at the University of Notre Dame, July 26-28, 2010. (by invitation) (received an award from the “Latino Overweight and Obesity Education Awareness and Prevention Initiative”)
Li, Xiugang, D. Lord, and Y. Zhang (2010) Development of Accident Modification Factors for Rural Frontage Road Segments in Texas Using Results from Generalized Additive Models. ASCE Journal of Transportation Engineering, Vol. 42, No. 4, pp. 74-83. (http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000202)
Lord, D., S.R. Geedipally, and S. Guikema (2010) Extension of the Application of Conway-Maxwell-Poisson Models: Analyzing Traffic Crash Data Exhibiting Under-Dispersion. Risk Analysis, Vol. 30, No. 8, pp. 1268-1276. (http://dx.doi.org/10.1111/j.1539-6924.2010.01417.x)
Lord, D., and F. Mannering (2010) The Statistical Analysis of Crash-Frequency Data: A Review and Assessment of Methodological Alternatives. Transportation Research – Part A, Vol. 44, No. 5, pp. 291-305. (http://dx.doi.org/10.1016/j.tra.2010.02.001)
Geedipally, S.R., and D. Lord (2010) Investigating the Effect of Modeling Single-Vehicle and Multi-Vehicle Crashes Separately on Confidence Intervals of Poisson-gamma Models. Accident Analysis & Prevention, Vol. 42, No. 4, pp. 1273-1282. (http://dx.doi.org/10.1016/j.aap.2010.02.004)
Fitzpatrick, K., D. Lord, and B.-J. Park (2010) Horizontal Curve Accident Modification Factors with Consideration of Driveway Density on Rural, Four-Lane Highways in Texas. ASCE Journal of Transportation Engineering, Vol. 136, No. 9, pp. 827-835. (http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000145) (Paper presented at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.)
Park, B.-J., Y. Zhang, and D. Lord (2010) Bayesian Mixture Modeling Approach to Account for Heterogeneity in Speed Data. Transportation Research – Part B, Vol. 44B, No. 5, pp. 662-673. (http://dx.doi.org/10.1016/j.trb.2010.02.004)
Ko, M., L.L. Higgins, S.T. Chrysler, and D. Lord (2010) Effect of Driving Environment on Drivers’ Eye Movements. Presented at the 89th Annual Meeting of the Transportation Research Board, Washington, D.C. This paper was written as a term paper in CVEN 626.
Park, P.Y., and D. Lord (2010) Investigating Regression-to-the-Mean in Before-and-After Speed Data Analysis. Transportation Research Record 2165, pp. 52-58.
Geedipally, S.R., S. Patil, and D. Lord (2010) Examination of Methods for Estimating Crash Counts According to their Collision Type. Transportation Research Record 2165, pp. 12-20.
Park, B.-J., K. Fitzpatrick, and D. Lord (2010) Evaluating the Effects of Freeway Design Elements on Safety. Transportation Research Record 2195, pp. 58-69.
Geedipally, S.R., and D. Lord (2010) Hot Spot Identification by Modeling Single-Vehicle and Multi-Vehicle Crash Separately. Transportation Research Record 2147, pp. 97-103.
Lord, D., P.-F. Kuo, and S.R. Geedipally (2010) Comparing the Application of the Product of Baseline Models and Accident Modification Factors and Models with Covariates: Predicted Mean Values and Variance. Transportation Research Record 2147, pp. 113-122.
Park, B.-J., D. Lord, and J. Hart (2010) Bias Properties of Bayesian Statistics in Finite Mixture of Negative Regression Models for Crash Data Analysis. Accident Analysis & Prevention, Vol. 42, No. 2, pp. 741-749. (http://dx.doi.org/10.1016/j.aap.2009.11.002) (Presented at the 89th Annual Meeting of the Transportation Research Board, Washington, D.C.)
Washington, S.P., D. lord, and B. Persaud (2009) The Use of Expert Panels in Highway Safety: A Critique. Transportation Research Record 2102, pp. 101-107. (Paper at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.)
Miranda-Moreno, L., L. Fu, S. Ukkusuri, and D. Lord (2009) How to Incorporate Accident Severity and Vehicle Occupancy into the Hotspot Identification Process? Transportation Research Record 2102, pp. 53-60. (Paper at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.)
Ye, Z., and D. Lord (2009) Estimating the Variance in Before-After Studies. Journal of Safety Research, Vol. 40, No. 4, pp. 257-263. (http://dx.doi.org/10.1016/j.jsr.2009.04.004) (Presented at the 86th Annual Meeting of the TRB.) This paper was written as a term paper in CVEN 626.
Jonsson, T., C. Lyon, J.N. Ivan, S. Washington, I. van Schalkwyk, and D. Lord (2009) Investigating Differences in the Performance of Safety Performance Functions Estimated for Total Crash Count and Crash Count by Crash Type. Transportation Research Record 2102, pp. 115-123. (Paper presented at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.)
Park, B.-J., and D. Lord (2009) Application of Finite Mixture Models for Vehicle Crash Data Analysis. Accident Analysis & Prevention, Vol. 41, No. 4, pp. 683-691. (http://dx.doi.org/10.1016/j.aap.2009.03.007) (Paper presented at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.)
Geedipally, S.R., D. Lord, and B.-J. Park (2009) Analyzing Different Parameterizations of the Varying Dispersion Parameter as a Function of Segment Length. Transportation Research Record 2103, pp. 108-118. (Paper at the 88th Annual Meeting to the Transportation Research Board, Washington, D.C.) (2009 Young Researchers Award ANB20)
Lord, D., and M. Mahlawat (2009) Examining the Application of Aggregated and Disaggregated Poisson-gamma Models Subjected to Low Sample Mean Bias. Transportation Research Record 2136, pp. 1-10. This paper was written as a term paper in CVEN 626.
Miranda-Moreno, L., D. Lord, and L. Fu (2009) Bayesian road safety analysis: incorporation of past experiences and effect of hyper-prior choice. Presented at the 87th Annual Meeting of the Transportation Research Board. *Revised version April 27, 2009.
Zietsman, J., B. Gokhale, D. Lord, and E. Bari (2008) Feasibility of Landfill Gas as a Liquefied Natural Gas Fuel Source for Refuse Trucks. Journal of the Air & Waste Management Association, Vol. 58, No. 5, pp. 613-619. (a rare paper not in highway safety) (http://dx.doi.org/10.3155/1047-3289.58.5.613)
Geedipally S., S.D. Guikema, S. Dhavala, and D. Lord (2008) Characterizing the Performance of a Bayesian Conway-Maxwell Poisson GLM. A paper was presented at the 2008 Joint Statistical Meetings, Denver, Co, August 3-7, 2008.
Lord, D., S.D. Guikema, and S. Geedipally (2008) Application of the Conway-Maxwell-Poisson Generalized Linear Model for Analyzing Motor Vehicle Crashes. Accident Analysis & Prevention, Vol. 40, No. 3, pp. 1123-1134. (doi:10.1016/j.aap.2007.12.003)
Lord, D. (2008) Methodology for Estimating the Variance and Confidence Intervals of the Estimate of the Product of Baseline Models and AMFs. Accident Analysis & Prevention, Vol. 40, No. 3, pp. 1013-1017. (doi:10.1016/j.aap.2007.11.008)
Li, X., D. Lord, Y. Zhang, and Y. Xie (2008) Predicting Motor Vehicle Crashes using Support Vector Machine Models. Accident Analysis & Prevention, Vol. 40, No. 4, pp. 1611-1618. (doi:10.1016/j.aap.2008.04.010) (Presented at the 87th Annual Meeting of the Transportation Research Board.) This paper was written as a term paper in CVEN 626.
Park, B.-J., and D. Lord (2008) Adjustment for the Maximum Likelihood Estimate of the Negative Binomial Dispersion Parameter. Transportation Research Record 2061, pp. 9-19. (Presented at the 87th Annual Meeting of the Transportation Research Board.) This paper was written as a term paper in CVEN 626.
Fitzpatrick, K., D. Lord, and B.-J. Park (2008) Accident Modification Factors for Medians on Freeways and Multilane Highways. Transportation Research Record 2083, pp. 62-71. (Presented at the 87th Annual Meeting of the Transportation Research Board.)
Geedipally, S.R. and D. Lord (2008) Effects of the Varying Dispersion Parameter of Poisson-gamma models on the Estimation of Confidence Intervals of Crash Prediction models. Transportation Research Record 2061, pp.46-54 (Presented at the 87th Annual Meeting of the Transportation Research Board.) This paper was written as a term paper in CVEN 626.
Lord, D., and P.Y-J. Park (2008) Investigating the effects of the fixed and varying dispersion parameters of Poisson-gamma models on empirical Bayes estimates. Accident Analysis & Prevention, Vol. 40, No. 4, pp. 1441-1457. (doi:10.1016/j.aap.2008.03.014)
Lord, D., and L.F. Miranda-Moreno (2008) Effects of Low Sample Mean Values and Small Sample Size on the Estimation of the Fixed Dispersion Parameter of Poisson-gamma Models for Modeling Motor Vehicle Crashes: A Bayesian Perspective. Safety Science, Vol. 46, No. 5, pp. 751-770.
Tong, J., and D. Lord (2007) Investigating the Application of Beta-Binomial Models in Highway Safety. Presented at the Canadian Multidisciplinary Road Safety Conference XVII, Montreal, June 3-8, 2007. This paper was written as a term paper in CVEN 626.
Gokhale B., J. Zietsman, and D. Lord (2007) Landfill Gas as a Liquefied Natural Gas Fuel Source for Refuse Trucks. Paper presented at the AWMA 100th Annual Conference and Exhibition, Pittsburgh, PA. (A revised version of this paper is available above)
Zhang, Y., Z. Ye, and D. Lord (2007) Estimating the Dispersion Parameter of the Negative Binomial Distribution for Analyzing Crash Data Using a Bootstrapped Maximum Likelihood Method. Transportation Research Record 2019, pp. 15-21.
Park, E.S., and D. Lord (2007) Multivariate Poisson-Lognormal Models for Jointly Modeling Crash Frequency by Severity. Transportation Research Record 2019, pp. 1-6.
Lord, D., and J.A. Bonneson (2007) Development of Accident Modification Factors for Rural Frontage Road Segments in Texas. Transportation Research Record 2023, pp. 20-27.
Xie, Y., D. Lord, and Y. Zhang (2007) Predicting Motor Vehicle Collisions using Bayesian Neural Networks: An Empirical Analysis. Accident Analysis & Prevention, Vol. 39, No. 5, pp. 922-933. (doi:10.1016/j.aap.2006.12.014) (Presented at the 86th Annual Meeting of the TRB) This paper was written as a term paper in CVEN 626.
van Schalkwyk, I., D. Lord, S. Chrysler, and L. Staplin (2007) Older Drivers and Roundabouts – Assessing Traffic Control Feature Characteristics Through the Use of Focus Groups and Structured Interviews. Presented at the 86th Annual Meeting of the TRB.
Lord, D., I. van Schalkwyk, S. Chrysler, and L. Staplin (2007) A Strategy to Reduce Older Driver Injuries at Intersections Using More Accommodating Roundabout Design Practices. Accident Analysis & Prevention, Vol. 39, No. 3, pp. 427-432. (doi:10.1016/j.aap.2006.09.011) You can find the original draft of the paper here. We kept the original version since the revised version focuses on the Phase II of the project.
Lord, D., S.P. Washington, and J.N. Ivan (2007) Further Notes on the Application of Zero Inflated Models in Highway Safety. Accident Analysis & Prevention, Vol. 39, No. 1, pp. 53-57. (doi:10.1016/j.aap.2006.06.004)
Whitacre, J.A., and D. Lord (2006) A Look at the Zero Tolerance Law in Texas. Paper presented at the Canadian Multidisciplinary Road Safety Conference XVI, Winnipeg, June 11-16, 2006. This paper was written as a term paper in CVEN 626.
Lord, D. (2006) Modeling Motor Vehicle Crashes using Poisson-gamma Models: Examining the Effects of Low Sample Mean Values and Small Sample Size on the Estimation of the Fixed Dispersion Parameter. Accident Analysis & Prevention, Vol. 38, No. 4, pp. 751-766. (doi:10.1016/j.aap.2006.02.001) (Presented at the 85th Annual Meeting of the TRB)
Agrawal, R., and D. Lord (2006) Effects of Sample Size on the Goodness-of-fit Statistic and Confidence Intervals of Crash Prediction Models Subjected to low Sample Mean Values. Transportation Research Record 1950, pp. 35-43. (Award Winning Paper – TRB Committee ABJ80) This paper was written as a term paper in CVEN 626.
Lord, D., and J.A. Bonneson (2006) Role and Application of Accident Modification Factors (AMFs) within the Highway Design Process. Transportation Research Record 1961, pp. 65-73.
Stevens, C.R. and D. Lord (2006) Evaluating the Safety Effects of Daylight Saving Time on Fatal and Non-Fatal Injury Crashes in Texas. Transportation Research Record 1953, pp. 147-155.
Brewer, M.A., K. Fitzpatrick, J.A. Whitaker, and D. Lord (2006) Exploration of Pedestrian Gap Acceptance Behavior at Selected Locations. Transportation Research Record 1982, pp. 132-140.
Middleton, D.A., and D. Lord (2006) Safety and Operational Aspects of Exclusive Truck Facilities. Paper presented at the 2005 International Truck and Bus Safety and Security Symposium, Alexandria, VA.
Miaou, S.-P., R.P. Bligh, and D. Lord (2005) Developing Median Barrier Installation Guidelines: A Benefit/Cost Analysis using Texas Data. Transportation Research Record 1904, pp. 3-19.
Lord, D., D. Middleton, and J. Whitacre (2005) Does Separating Trucks from Other Traffic Improve Safety? Transportation Research Record 1922, pp 156-166.
Lord, D., and J.A. Bonneson (2005) Calibration of Predictive Models for Estimating the Safety of Ramp Design Configurations. Transportation Research Record 1908, pp. 88-95.
Lord, D., S.P. Washington, and J.N. Ivan (2005) Poisson, Poisson-Gamma and Zero Inflated Regression Models of Motor Vehicle Crashes: Balancing Statistical Fit and Theory. Accident Analysis & Prevention. Vol. 37, No. 1, pp. 35-46. (doi:10.1016/j.aap.2004.02.004) (Also presented at the 83rd Annual Meeting of the TRB) The full paper can be found here.
Lord, D., A. Manar, and A. Vizioli (2005) Modeling Crash-Flow-Density and Crash-Flow-V/C Ratio for Rural and Urban Freeway Segments. Accident Analysis & Prevention. Vol. 37, No. 1, pp. 185-199. (doi:10.1016/j.aap.2004.07.003) (Also presented at the 83 rd Annual Meeting of the TRB)
Please note that I corrected Figure 3 for the version available here. Unfortunately, Figures 2 and 3 were duplicated in the original published document. A Erratum has been published in AA&P: Erratum to “Modeling crash-flow-density and crash-flow-V/C ratio relationships for rural and urban freeway segments” [Accid. Anal. Prev. 37 (2005) 185–199] (doi:10.1016/j.aap.2005.10.011)
Lord, D., and B.N. Persaud (2004) Estimating the Safety Performance of Urban Transportation Networks. Accident Analysis & Prevention. Vol. 36, No. 2, pp. 609-620. (doi:10.1016/S0001-4575(03)00069-1)
Lord, D., H.A. Abdou, A. N’Zué, G. Dionne , and C. Laberge-Nadeau (2003) Traffic Safety Diagnostic and Application of Countermeasures for Rural Roads in Burkina Faso. Transportation Research Record 1846, pp. 39-43. The full report can be found here.
Miaou, S.-P., and D. Lord (2003) Modeling Traffic-Flow Relationships at Signalized Intersections: Dispersion Parameter, Functional Form and Bayes vs Empirical Bayes. Transportation Research Record 1840, pp. 31-40.
Persaud, B.N., H. McGee, C. Lyon, and D. Lord (2003) Development of a Procedure for Estimating the Safety Effects for a Contemplated Traffic Signal Installation. Transportation Research Record 1840, pp. 96-103.
Thouez, J.P., D. Lord, J. Bergeron, R. Boudreau, Y. Buissière, H. Bélanger-Bonneau, A. Rannou, and M.E. Latremouille (2003) Physical and environmental characteristics of signalized intersections and pedestrian behavior. Advances in Transport, Vol. 14, No 1, pp. 143-148. (I do not have a copy of the paper)
Lord, D. (2002) Issues Related to the Application of Accident Prediction Models for the Computation of Accident Risk on Transportation Networks. Transportation Research Record 1784, pp. 17-26.
Persaud, B.N., D. Lord, and J. Palminaso (2002) Issues of Calibration and Transferability in Developing Accident Prediction Models for Urban Intersections. Transportation Research Record 1784, pp. 57-64.
Lord, D. (2003) Synthesis on the Safety of Right Turn on Red in the United States and Canada. Paper presented at 82nd Annual Meeting of the TRB. National Research Council, Washington, D.C. Note: This paper was turned down for publication due to an idiot working at the City of Philadelphia.
Persaud B.N., R. Retting, P.Garder and D. Lord (2001) Observational before-after study of U.S. roundabout conversions using the empirical Bayes method. Transportation Research Record 1751, pp. 1-8.
Lord, D., and B.N. Persaud (2000) Accident Prediction Models With and Without Trend: Application of the Generalized Estimating Equations (GEE) Procedure. Transportation Research Record 1717, pp. 102-108.
Working Papers
Zou, Y., D. Lord, and Y. Zhang (2012) Analyzing Highly Dispersed Crash Data Using the Sichel Generalized Additive Models for Location, Scale and Shape. Paper may be submitted for publication. *Dec 5, 2011 File here: Zou_et_al_Sichel_GAMLSS
Geedipally, S.R., D. Lord and C. Eugene Buth (2011) Estimating the Crash Risk involving Heavy Vehicles and Bridge Piers. Working Paper. File here: Geedipally_et_al_Bridge_Piers
Lord, D., and B.-J. Park (2009) Including Statistical Power for Determining How Many Crashes Are Needed in Highway Safety Studies. Working Paper (not submitted for publication, but included in my textbook).
Lord, D., B. Persaud, S.P. Washington, J. Ivan, I. van Schalkwyk, C. Lyon and S.R. Geedipally (2008) Application of the Predictive Methodology for Estimating the Safety Performance of Multilane Rural Highways: Improvement of an Existing Highway. Working Paper. This paper was eventually not submitted for TRB, since the HSM was not yet published at the time.
Ph.D. Dissertation
- Lord, D. (2000) The Prediction of Accidents on Digital Networks: Characteristics and Issues Related to the Application of Accident Prediction Models. Ph.D. Dissertation. Department of Civil Engineering, University of Toronto, Toronto, Ontario. File here: PhD_Dissertation_DLord_UofT_2000