Billy Williams

Das, T., Ahmed, I., Williams, B. M., & Rouphail, N. M. (2023, December 29). Response time of mixed platoons with traditional and autonomous vehicles in field trials: impact assessment on flow stability and safety. TRANSPORTMETRICA A-TRANSPORT SCIENCE, Vol. 12. https://doi.org/10.1080/23249935.2023.2298498

Ahmed, I., Williams, B. M., Samandar, M. S., & Chun, G. (2022). Investigating the relationship between freeway rear-end crash rates and macroscopically modeled reaction time. TRANSPORTMETRICA A-TRANSPORT SCIENCE, 18(3), 1001–1024. https://doi.org/10.1080/23249935.2021.1914769

Hasnat, M. M., Bardaka, E., Samandar, M. S., Rouphail, N., List, G., & Williams, B. (2021). Impacts of Private Autonomous and Connected Vehicles on Transportation Network Demand in the Triangle Region, North Carolina. JOURNAL OF URBAN PLANNING AND DEVELOPMENT, 147(1). https://doi.org/10.1061/(ASCE)UP.1943-5444.0000649

Song, T.-J., Kim, S., Williams, B. M., Rouphail, N. M., & List, G. F. (2020). Crash Classification by Congestion Type for Highways. APPLIED SCIENCES-BASEL, 10(7). https://doi.org/10.3390/app10072583

Rosamond, W. D., Johnson, A. M., Bogle, B. M., Arnold, E., Cunningham, C. J., Picinich, M., … Zègre-Hemsey, J. K. (2020). Drone Delivery of an Automated External Defibrillator. New England Journal of Medicine, 383(12), 1186–1188. https://doi.org/10.1056/NEJMc1915956

Ahmed, I., Williams, B. M., & Samandar, M. S. (2018). Application of a Discontinuous Form of Macroscopic Gazis-Herman-Rothery Model to Steady-State Freeway Traffic Stream Observations. TRANSPORTATION RESEARCH RECORD, 2672(20), 51–62. https://doi.org/10.1177/0361198118799166

Song, T.-J., Williams, B. M., & Rouphail, N. M. (2018). Data-driven approach for identifying spatiotemporally recurrent bottlenecks. IET INTELLIGENT TRANSPORT SYSTEMS, 12(8), 756–764. https://doi.org/10.1049/iet-its.2017.0284

Huang, W., Jia, W., Guo, J., Williams, B., Shi, G., Wei, Y., & Cao, J. (2018). Real-Time Prediction of Seasonal Heteroscedasticity in Vehicular Traffic Flow Series. IEEE Transactions on Intelligent Transportation Systems, 19(10), 3170–3180. https://doi.org/10.1109/TITS.2017.2774289

List, G. F., Rouphail, N., Smith, R., & Williams, B. (2018). Reliability Assessment Tool: Development and Prototype Testing. TRANSPORTATION RESEARCH RECORD, 2672(14), 29–38. https://doi.org/10.1177/0361198118798296

Karmakar, N., Aghdashi, S., Rouphail, N. M., & Williams, B. M. (2018). Validation and Calibration of Freeway Reliability Methodology in the Highway Capacity Manual: Method and Case Studies. TRANSPORTATION RESEARCH RECORD, 2672(15), 93–104. https://doi.org/10.1177/0361198118798723

Samandar, M. S., Williams, B. M., & Ahmed, I. (2018). Weigh Station Impact on Truck Travel Time Reliability: Results and Findings from a Field Study and a Simulation Experiment. TRANSPORTATION RESEARCH RECORD, 2672(9), 120–129. https://doi.org/10.1177/0361198118791667

List, G. F., & Williams, B. (2017). Advances in travel time reliability monitoring and assessment. JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, Vol. 21, pp. 435–438. https://doi.org/10.1080/15472450.2017.1403536

Song, T.-J., So, J., Lee, J., & Williams, B. M. (2017). Exploring Vehicle–Pedestrian Crash Severity Factors on the Basis of In-Car Black Box Recording Data. In Transportation Research Record (Vol. 2659, pp. 148–154). https://doi.org/10.3141/2659-16

Clark, H., McLaughlin, A. C., Williams, B., & Feng, J. (2017). Performance in takeover and characteristics of non-driving related tasks during highly automated driving in younger and older drivers. Proceedings of the Human Factors and Ergonomics Society, 2017-October, 37–41. https://doi.org/10.1177/1541931213601504

Kim, S., Hajbabaie, A., Williams, B. M., & Rouphail, N. M. (2016). Dynamic Bandwidth Analysis for Coordinated Arterial Streets. JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, 20(3), 294–310. https://doi.org/10.1080/15472450.2015.1074575

Yi, T., & Williams, B. M. (2015). Dynamic traffic flow model for travel time estimation. In Transportation Research Record (Vol. 2526, pp. 70–78). https://doi.org/10.3141/2526-08

Yi, T., & Williams, B. M. (2015). Dynamic traffic flow model for travel time estimation. Transportation Research Record, (2526), 70–78.

Guo, J., Huang, W., & Williams, B. M. (2015). Real time traffic flow outlier detection using short-term traffic conditional variance prediction. TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES, 50, 160–172. https://doi.org/10.1016/j.trc.2014.07.005

Guo, J., Huang, W., & Williams, B. M. (2014). Adaptive Kalman filter approach for stochastic short-term traffic flow rate prediction and uncertainty quantification. TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES, 43, 50–64. https://doi.org/10.1016/j.trc.2014.02.006

Shi, G., Guo, J., Huang, W., & Williams, B. M. (2014). Erratum for “Modeling Seasonal Heteroscedasticity in Vehicular Traffic Condition Series Using a Seasonal Adjustment Approach” by Guogang Shi, Jianhua Guo, Wei Huang, and Billy M. Williams. Journal of Transportation Engineering, 140(9), 08014002. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000687

Shi, G., Guo, J., Huang, W., & Williams, B. M. (2014). Modeling Seasonal Heteroscedasticity in Vehicular Traffic Condition Series Using a Seasonal Adjustment Approach. Journal of Transportation Engineering, 140(5), 04014012. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000656

Shi, G. G., Guo, J. H., Huang, W., & Williams, B. M. (2014). Modeling seasonal heteroscedasticity in vehicular traffic condition series using a seasonal adjustment approach (vol 140, 04014012, 2014). Journal of Transportation Engineering, Vol. 140.

Xu, Y., Williams, B., Rouphail, N., & Chase, R. (2013). Development of an oversaturated speed-flow model based on the highway capacity manual. In Transportation Research Record (pp. 41–48). https://doi.org/10.3141/2395-05

Xu, Y. L., Williams, B. M., Rouphail, N. M., & Chase, R. T. (2013). Development of an oversaturated speed-flow model based on the highway capacity manual. Transportation Research Record, (2395), 41–48.

Isukapati, I. K., List, G. F., Williams, B. M., & Karr, A. F. (2013). Synthesizing Route Travel Time Distributions from Segment Travel Time Distributions. TRANSPORTATION RESEARCH RECORD, (2396), 71–81. https://doi.org/10.3141/2396-09

Chase, R. T., Williams, B. M., Rouphail, N. M., & Kim, S. K. (2012). Comparative Evaluation of Reported Speeds from Corresponding Fixed-Point and Probe-Based Detection Systems. TRANSPORTATION RESEARCH RECORD, (2308), 110–119. https://doi.org/10.3141/2308-12

Al-Ghandour, M., Schroeder, B., Rasdorf, W., & Williams, B. (2012). Delay analysis of single-lane roundabout with a slip lane under varying exit types, experimental balanced traffic volumes, and pedestrians, using microsimulation. In Transportation Research Record (pp. 76–85). https://doi.org/10.3141/2312-08

Al-Ghandour, M., Schroeder, B., Rasdorf, W., & Williams, B. (2012). Delay analysis of single-lane roundabout with a slip lane under varying exit types, experimental balanced traffic volumes, and pedestrians, using microsimulation. Transportation Research Record, (2312), 76–85.

Lee, J., & Williams, B. M. (2012). Development and evaluation of a constrained optimization model for traffic signal plan transition. Transportation Research Part C: Emerging Technologies, 20(1), 185–198. https://doi.org/10.1016/j.trc.2011.05.008

Guo, J., Huang, W., & Williams, B. M. (2012). Integrated Heteroscedasticity Test for Vehicular Traffic Condition Series. JOURNAL OF TRANSPORTATION ENGINEERING, 138(9), 1161–1170. https://doi.org/10.1061/(asce)te.1943-5436.0000420

Liu, C., Williams, B., & Rouphail, N. (2012). Temporal stability of freeway macroscopic traffic stream models. In Transportation Research Record (pp. 131–140). https://doi.org/10.3141/2315-14

Liu, C. H., Williams, B. M., & Rouphail, N. M. (2012). Temporal stability of freeway macroscopic traffic stream models. Transportation Research Record, (2315), 131–140.

Williams, B. M. (2012). ‘Real-time road traffic forecasting using regime-switching space-time models and adaptive lasso’ by Y. Kamarianakis, W. Shen, and L. Wynter. Applied Stochastic Models in Business and Industry, 28(4), 319–321. https://doi.org/10.1002/asmb.1938

Al-Ghandour, M., Rasdorf, W., Williams, B., & Schroeder, B. (2011). Analysis of Single-Lane Roundabout Slip Lanes Using SIDRA. In I. L. Al-Qadi & S. Murrell (Eds.), T & DI Congress 2011 : integrated transportation and development for a better tomorrow : proceedings of the First Transportation and Development Institute Congress : March 13-16, 2011, Chicago, Illinois (pp. 1235–1244). https://doi.org/10.1061/41167(398)118

Kittelson, W. K., Rouphail, N. M., Williams, B., & Zhou, X. (2011). Analyzing Operational Improvements as an Alternative to Traditional Highway Construction. Transportation Research Record, (2223), 18–25. https://doi.org/10.3141/2223-03

Al-Ghandour, M. N., Schroeder, B. J., Williams, B., & Rasdorf, W. J. (2011). Conflict Models for Single-Lane Roundabout Slip Lanes from Microsimulation Development and Validation. Transportation Research Record, (2236), 92–101. https://doi.org/10.3141/2236-11

Lee, J., & Williams, B. M. (2011). Development and evaluation of a constrained optimization model for traffic signal plan transition. PAPERS SELECTED FOR THE 19TH INTERNATIONAL SYMPOSIUM ON TRANSPORTATION AND TRAFFIC THEORY, Vol. 17, pp. 490–508. https://doi.org/10.1016/j.sbspro.2011.04.528

Lee, J., & Williams, B. M. (2011). Fundamental Insight into Signal Plan Transition Methods. JOURNAL OF TRANSPORTATION ENGINEERING-ASCE, 137(10), 676–686. https://doi.org/10.1061/(asce)te.1943-5436.0000269

Jia, A., Zhou, X., Li, M., Rouphail, N. M., & Williams, B. (2011). Incorporating Stochastic Road Capacity into Day-to-Day Traffic Simulation and Traveler Learning Framework Model Development and Case Study. Transportation Research Record, (2254), 112–121. https://doi.org/10.3141/2254-12

Jia, A., Williams, B., & Rouphail, N. M. (2010). Identification and Calibration of Site-Specific Stochastic Freeway Breakdown and Queue Discharge. Transportation Research Record, (2188), 148–155. https://doi.org/10.3141/2188-16

Guo, J., & Williams, B. (2010). Real-Time Short-Term Traffic Speed Level Forecasting and Uncertainty Quantification Using Layered Kalman Filters. Transportation Research Record, (2175), 28–37. https://doi.org/10.3141/2175-04

Vanajakshi, L. D., Williams, B., & Rilett, L. R. (2009). Improved flow-based travel time estimation method from point detector data for freeways. Journal of Transportation Engineering, 135(1), 26–36. https://doi.org/10.1061/(ASCE)0733-947X(2009)135:1(26)

Hu, H., Williams, B., Rouphail, N. M., Khattak, A. J., & Zhou, X. (2009). Modeling the Role of Transportation Information in Mitigating Major Capacity Reductions in a Regional Network. Transportation Research Record, (2138), 75–84. https://doi.org/10.3141/2138-11

Khattak, A. J., Pan, X., Williams, B., Rouphail, N., & Fan, Y. (2008). Traveler Information Delivery Mechanisms Impact on Consumer Behavior. Transportation Research Record, (2069), 77–84. https://doi.org/10.3141/2069-10

Shekhar, S., & Williams, B. (2007). Adaptive seasonal time series models for forecasting short-term traffic flow. Transportation Research Record, (2024), 116–125. https://doi.org/10.3141/2024-14

Guo, J., Williams, B., & Smith, B. L. (2007). Data collection time intervals for stochastic short-term traffic flow forecasting. Transportation Research Record, (2024), 18–26. https://doi.org/10.3141/2024-03

Williams, B., Tagliaferri, A. P., Meinhold, S. S., Hummer, J. E., & Rouphail, N. M. (2007). Simulation and analysis of freeway lane reversal for coastal hurricane evacuation. Journal of Urban Planning and Development, 133(1), 61–72. https://doi.org/10.1061/(ASCE)0733-9488(2007)133:1(61)

Williams, B. M., & Guin, A. (2007). Trraffic management center use of incident detection algorithms: Findings of a nationwide survey. IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, 8(2), 351–358. https://doi.org/10.1109/TITS.2007.894193

Williams, B. M., Amekudzi, A. A., Folds, D., Zureick, A.-H., & Kim, Y. S. (2006). Comprehensive Evaluation of Guardrail Delineation Systems. Public Works Management  Policy, 11(1), 49–62. https://doi.org/10.1177/1087724X06292289

Baek, J., Hummer, J. E., Williams, B. M., & Cunningham, C. M. (2006). Reasonable Speed Limits on Suburban Multilane Highways with Curbs. Transportation Research Record, (1969), 10–17. https://doi.org/10.3141/1969-04

Baek, J., Hummer, J. E., Williams, B. M., & Cunningham, C. M. (2006). Reasonable speed limits on suburban multilane highways with curbs. In Highway safety: law enforcement; alcohol; driver training; safety planning and management; commercial vehicles; and motorcycles (pp. 10–17). Washington: Transportation Research Board Natl Research Council.

Baek, J., Hummer, J. E., Williams, B. M., Cunningham, C. M., & TRB. (2006). Reasonable speed limits on suburban multilane highways with curbs. In Highway Safety: Law Enforcement; Alcohol; Driver Training; Safety Planning and Management; Commercial Vehicles; and Motorcycles (pp. 10–17). Retrieved from http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000243925000002&KeyUID=WOS:000243925000002

Ni, D., Leonard, J. D., II, & Williams, B. M. (2006). The network kinematic waves model: A simplified approach to network traffic. JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS, 10(1), 1–14. https://doi.org/10.1080/15472450500455070

Ni, D., Leonard, J., Guin, A., & Williams, B. (2004). Systematic Approach for Validating Traffic Simulation Models. Transportation Research Record, 1876(1876), 20–31. https://doi.org/10.3141/1876-03

Ni, D. H., Leonard, J. D., Guin, A., & Williams, B. M. (2004). Systematic approach for validating traffic simulation models. In Calibration and validation of simulation models 2004 (pp. 20–31). Washington, DC: Transportation Research Board.

Ni, D. H., Leonard, J. D., Guin, A., Williams, B. M., & TBR. (2004). Systematic approach for validating traffic simulation models. In Calibration and Validation of Simulation Models 2004 (pp. 20–31). Retrieved from http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000227334900003&KeyUID=WOS:000227334900003

Oliveira, M. G., Williams, B., & Leonard, J. D. (2003). Determining traffic stream impacts of radar detectors using microscopic simulation. Journal of Transportation Engineering, 129(1), 7–15. https://doi.org/10.1061/(ASCE)0733-947X(2003)129:1(7)

Williams, B., & Hoel, L. A. (2003). Modeling and forecasting vehicular traffic flow as a seasonal ARIMA process: Theoretical basis and empirical results. Journal of Transportation Engineering, 129(6), 664–672. https://doi.org/10.1061/(ASCE)0733-947X(2003)129:6(664)

Smith, B. L., Williams, B. M., & Keith Oswald, R. (2002). Comparison of parametric and nonparametric models for traffic flow forecasting. Transportation Research Part C: Emerging Technologies, 10(4), 303–321. https://doi.org/10.1016/S0968-090X(02)00009-8

Williams, B. M. (2001). Multivariate Vehicular Traffic Flow Prediction: Evaluation of ARIMAX Modeling. Transportation Research Record, 1776(1776), 194–200. https://doi.org/10.3141/1776-25

Williams, B. M., & TRB. (2001). Multivariate vehicular traffic flow prediction - Evaluation of ARIMAX modeling. In Traffic Flow Theory and Highway Capacity 2001 (pp. 194–200). Retrieved from http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000176595900025&KeyUID=WOS:000176595900025

Williams, B. M., & Hoel, L. A. (1998). Freight planning requirements for interstate corridors. Transportation Quarterly, 52(2), 39–48. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0032021740&partnerID=MN8TOARS

Williams, B. M., Durvasula, P. K., & Brown, D. E. (1998). Urban Freeway Traffic Flow Prediction: Application of Seasonal Autoregressive Integrated Moving Average and Exponential Smoothing Models. Transportation Research Record, 1644(1644), 132–141. https://doi.org/10.3141/1644-14

Williams, B. M., Durvasula, P. K., Brown, D. E., & NRC. (1998). Urban freeway traffic flow prediction - Application of seasonal autoregressive integrated moving average and exponential smoothing models. In Traffic Flow Theory (pp. 132–141). Retrieved from http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000082030300014&KeyUID=WOS:000082030300014