This research aimed at evaluating the safety effectiveness of road safety improvement programs (RSIPs). The safety effectivemeness of several engineering countermeasueres were evaluated using the state-of-the-art statiscial methods. The first evaluation was undertaken for cable barrier systems installed on rural highways in British Columbia, Canada. The second evaluation was carried out for the integration of Road Weather Information Systems (RWISs) and Variable Message Signs (VMSs). A third evaluation was done for Variable Speed Limit Systems (VSLSs). 
Data of police-attended serious collisions (injury + fatality) on a number of rural highway sections in British Columbia, Canada, were used in the analysis. An empirical Bayes (EB) approach was employed to ensure that the evaluation results were reliable and to account for cofounding factors. In conclusion, all the evaluated systems deemed successful in reducing the frequency of serious collisions on provincial highways in British Columbia. Still, these systems can be applied on Egyptian rural multi-lane highways to improve safety.

Research Team

1. Mohamed Elfaramawy El Esawey

Related Journal Publication List

1. El Esawey, M., Sengupta, J., Babineau, J.E., and Takyi, E. Safety Evaluation of Variable Speed Limit System in British Columbia. Presented at the 100th Annual Meeting of the Transportation Research Board, Washington, D.C., 2021.
2. El Esawey, M., Walker, S., Sowers, C., and Sengupta, J. Safety Assessment of the Integration of Road Weather Information Systems (RWISs) and Variable Message Signs (VMSs) in British Columbia. In Transportation Research Record, Volume (2673), Issue (4), pp. 305-313, 2019.
3. El Esawey, M. Sowers, C., Sengupta, J., and Jain, R. Safety Evaluation of Cable Barriers Installation on Rural Highways in British Columbia. In Traffic Injury Prevention, Volume (20), Issue (2), pp. 220-225. April 2019.