• Cyber Physical Systems & Big Data
  • Smart Transport & Health
  • Sustainability, Smart Cities & Shared Mobility
  • Safety for All
  1. Wali, B.*, Khattak, A. J., & Karnowski, T. (2020). The relationship between driving volatility in time to collision and crash-injury severity in a naturalistic driving environment. Analytic Methods in Accident Research, 28, 100136.
  2. Wali, B., & Khattak, A. J. (2020). Harnessing ambient sensing & naturalistic driving systems to understand links between driving volatility and crash propensity in school zones–A generalized hierarchical mixed logit framework. Transportation research part C: emerging technologies, 114, 405-424.
  3. Boggs, A. M., Wali, B., & Khattak, A. J. (2020). Exploratory analysis of automated vehicle crashes in California: A text analytics & hierarchical Bayesian heterogeneity-based approach. Accident Analysis & Prevention, 135, 105354.
  4. Wali, B., Khattak, A. J., & Karnowski, T. (2019). Exploring microscopic driving volatility in naturalistic driving environment prior to involvement in safety critical events—Concept of event-based driving volatility. Accident Analysis & Prevention, 132, 105277.
  5. Shay, E., Khattak, A. J., & Wali, B. (2018). Walkability in the connected and automated vehicle era: a US perspective on research needs. Transportation research record, 2672(35), 118-128.
  6. Wali, B., Khattak, A. J., Bozdogan, H., & Kamrani, M. (2018). How is driving volatility related to intersection safety? A Bayesian heterogeneity-based analysis of instrumented vehicles data. Transportation research part C: emerging technologies, 92, 504-524.
  7. Khattak, A. J., & Wali, B.* (2017). Analysis of volatility in driving regimes extracted from basic safety messages transmitted between connected vehicles. Transportation research part C: emerging technologies, 84, 48-73.
  8. Kamrani, M., Wali, B., & Khattak, A. J. (2017). Can data generated by connected vehicles enhance safety?: Proactive approach to intersection safety management. Transportation Research Record, 2659(1), 80-90.
  1. Wali, B.*, Frank, L.D., Young, D.R., Saelens, B.E., Meenan, R.T., Dickerson, J.F., Keast, E.M., Kuntz, J.L. and Fortmann, S.P., 2022. Pathways from Built Environment to Health Care Costs: Linking Objectively Measured Built Environment with Physical Activity and Health Care Expenditures. Environment and Behavior, 54(4), pp.747-782.
  2. Wali, B.*, Frank, L. D., Young, D. R., Meenan, R. T., Saelens, B. E., Dickerson, J. F., & Fortmann, S. P. (2022). Causal evaluation of the health effects of light rail line: A natural experiment. Journal of Transport & Health, 24, 101292.
  3. Meenan, R.T., Frank, L.D., Saelens, B.E., Young, D.R., Kuntz, J.L., Dickerson, J.F., Wali, B., Keast, E.M. and Fortmann, S.P., 2022. Effects of an urban light rail line on health care utilization and cost: A pre-post assessment. Transport Policy.
  4. Wali, B.* & Frank, L.D. (2021). Neighborhood-level COVID-19 hospitalizations and mortality relationships with built environment, active and sedentary travel. Health & Place, 71, 102659.
  5. Frank, L. D.1, & Wali, B.*1 (1 indicates co-first authors)(2021). Treating two pandemics for the price of one: Chronic and infectious disease impacts of the built and natural environment. Sustainable Cities and Society, 103089.
  6. Wali, B.*, Frank, L. D., Chapman, J. E., & Fox, E. H. (2021). Developing policy thresholds for objectively measured environmental features to support active travel. Transportation research part D: transport and environment, 90, 102678.
  7. Berrigan, D., Dannenberg, A. L., Lee, M., Rodgers, K., Wojcik, J. R., Wali, B., Tribby, C., Buehler, R., Sallis, J., Roberts, J., Steedly, A., Peng, B., Eisenberg, Y., & Rodriguez, D. A. (2021). The 2019 Conference on Health and Active Transportation: Research Needs and Opportunities. International Journal of Environmental Research and Public Health, 18(22), 11842.
  1. Wali, B., Santi, P., & Ratti, C. (2022). A joint demand modeling framework for ride-sourcing and dynamic ridesharing services: a geo-additive Markov random field based heterogeneous copula framework. Transportation, 1-37.
  2. Wali, B., & Khattak, A. J. (2022). A joint behavioral choice model for adoption of automated vehicle ride sourcing and carsharing technologies: Role of built environment & sustainable travel behaviors. Transportation Research Part C: Emerging Technologies, 136, 103557.
  3. Wali, B.*, Santi, P., Ratti, C. (2021) Modeling Consumer Affinity Towards Adopting Partially and Fully Automated Vehicles – The Role of Preference Heterogeneity at Different Geographic Levels. Transportation Research Part C: Emerging Technologies, 129, 103276.
  4. Wali, B., Greene, D. L., Khattak, A. J., & Liu, J. (2018). Analyzing within garage fuel economy gaps to support vehicle purchasing decisions–A copula-based modeling & forecasting approach. Transportation Research Part D: Transport and Environment, 63, 186-208.
  5. Wali, B.*, Khattak, A. J., Greene, D. L., & Liu, J. (2019). Fuel economy gaps within and across garages: A bivariate random parameters seemingly unrelated regression approach. International Journal of Sustainable Transportation, 13(5), 324-339.
  6. Greene, D. L., Liu, J., Khattak, A. J., Wali, B., Hopson, J. L., & Goeltz, R. (2017). How does on-road fuel economy vary with vehicle cumulative mileage and daily use?. Transportation Research Part D: Transport and Environment, 55, 142-161.
  7. Greene, David L., Asad J. Khattak, and Behram Wali*. Planning Tools for Deployment of Alternative Energy Refueling Infrastructure. No. 17-03416. 2017. Transportation Research Board.
  1. Ahmad, N., Wali, B.*, & Khattak, A. J. (2022). Heterogeneous Ensemble Learning for Enhanced Crash Forecasts--A Frequentist and Machine Learning based Stacking Framework. arXiv preprint arXiv:2207.10721. Forthcoming in Journal of Safety Research.
  2. Wali, B., Ahmad, N., & Khattak, A. J. (2022). Toward better measurement of traffic injuries–Comparison of anatomical injury measures in predicting the clinical outcomes in motorcycle crashes. Journal of Safety Research. DOI: https://doi.org/10.1016/j.jsr.2021.11.013
  3. Wali, B., Khattak, A. J., & Liu, J. (2022). Heterogeneity Assessment in Incident Duration Modelling: Implications for Development of Practical Strategies for Small & Large Scale Incidents. Forthcoming in Journal of Intelligent Transportation Systems. 
  4. Wali, B.*, Khattak, A. J., & Ahmad, N. (2021). Injury severity analysis of pedestrian and bicyclist trespassing crashes at non-crossings: A hybrid predictive text analytics and heterogeneity-based statistical modeling approach. Accident Analysis & Prevention, 150, 105835.
  5. Ahmad, N., Wali, B.*, Khattak, A. J., & Dumbaugh, E. (2021). Built environment, driving errors and violations, and crashes in naturalistic driving environment. Accident Analysis & Prevention, 157, 106158.
  6. Khattak, A. J., Ahmad, N., Wali, B., & Dumbaugh, E. (2021). A taxonomy of driving errors and violations: Evidence from the naturalistic driving study. Accident Analysis & Prevention, 151, 105873.
  7. Wali, B., Ahmad, N., Khattak, A. J., & Nazar, A. M. (2020). Developing Safety Performance Functions for Rural Multilane Highways in Tennessee: Accounting for Unobserved Heterogeneity. In 99th Annual Meeting of the Transportation Research Board (TRB), Washington DC.
  8. Wali, B., Khattak, A. J., & Ahmad, N. (2019). Examining correlations between motorcyclist’s conspicuity, apparel related factors and injury severity score: Evidence from new motorcycle crash causation study. Accident Analysis & Prevention, 131, 45-62.
  9. Rashid, H. M., Ahmed, A., Wali, B.*, & Qureshi, N. A. (2019). An analysis of highway work zone safety practices in Pakistan. International journal of injury control and safety promotion, 26(1), 37-44.
  10. Xu, J., Wali, B., Li, X., & Yang, J. (2019). Injury severity and contributing driver actions in passenger vehicle–truck collisions. International journal of environmental research and public health, 16(19), 3542.
  11. Wali, B.*, Khattak, A. J., & Khattak, A. J. (2018). A heterogeneity based case-control analysis of motorcyclist’s injury crashes: Evidence from motorcycle crash causation study. Accident Analysis & Prevention, 119, 202-214.
  12. Wali, B., Khattak, A. J., Waters, J., Chimba, D., & Li, X. (2018). Development of safety performance functions: incorporating unobserved heterogeneity and functional form analysis. Transportation research record, 2672(30), 9-20.
  13. Wali, B., Ahmed, A., & Ahmad, N. (2018, August). An ordered-probit analysis of enforcement of road speed limits. In Proceedings of the Institution of Civil Engineers-Transport (Vol. 171, No. 4, pp. 225-234). Thomas Telford Ltd.
  14. Boakye, K. F., Wali, B.*, Khattak, A. J., & Nambisan, S. (2018). Are enforcement strategies effective in increasing nighttime seat belt use? Evidence from a large-scale before–after observational study (No. 18-06451). In 97th Annual Meeting of the Transportation Research Board (TRB), Washington DC.
  15. Wali, B.*, Khattak, A. J., & Xu, J. (2018). Contributory fault and level of personal injury to drivers involved in head-on collisions: application of copula-based bivariate ordinal models. Accident Analysis & Prevention, 110, 101-114.
  16. Raheel, M., Khan, R., Khan, A., Khan, M. T., Ali, I., Alam, B., & Wali, B. (2018). Impact of axle overload, asphalt pavement thickness and subgrade modulus on load equivalency factor using modified ESALs equation. Cogent Engineering, 5(1), 1528044.
  17. Akbar, M., Khan, R., Khan, M. T., Alam, B., Elahi, M., Wali, B., & Shah, A. A. (2018). Methodology for Simulating Heterogeneous Traffic Flow at Intercity Roads in Developing Countries: A Case Study of University Road in Peshawar. Arabian Journal for Science and Engineering, 43(4), 2021-2036.
  18. Liu, J., Khattak, A. J., & Wali, B. (2017). Do safety performance functions used for predicting crash frequency vary across space? Applying geographically weighted regressions to account for spatial heterogeneity. Accident Analysis & Prevention, 109, 132-142.
  19. Wali, B., Ahmed, A., Iqbal, S., & Hussain, A. (2017). Effectiveness of enforcement levels of speed limit and drink driving laws and associated factors–Exploratory empirical analysis using a bivariate ordered probit model. Journal of traffic and transportation engineering (English edition), 4(3), 272-279.
  20. Li, X., Khattak, A. J., & Wali, B. (2017). Role of multiagency response and on-scene times in large-scale traffic incidents. Transportation Research Record, 2616(1), 39-48.
  21. Khattak, A. J., Liu, J., Wali, B., Li, X., & Ng, M. (2016). Modeling traffic incident duration using quantile regression. Transportation Research Record, 2554(1), 139-148.