As traffic demands increase, it is essential that transportation planners and traffic engineers consider possible improvements to the existing conditions of roadway systems. A roadway intersection needs to be analysed in terms of its safety, geometric and operational conditions for the purpose of potential improvements. This report presents results obtained from a research project performed to develop a new procedure to prioritise intersections for safety improvements. The procedure developed through the study considers both safety performance and traffic operational performance. For safety, the benefit cost ratio was considered, and for traffic operational, average total delay. The study was conducted by reviewing existing reports and information databases, conducting field data collection for traffic turning movements and geometric conditions, and developing a new model with the use of a utility function and a logit model to prioritise intersections. A case study was performed to test the model. Three priority lists for the year 1996 were determined as the application of the new procedure. The first priority list was based on safety factors, the second priority list on operational factors, and the third priority list on safety and operational factors. (A)
Samenvatting