Safety Benefits Analysis for Traffic Congestion

National Highways is seeking suppliers to assist with two main areas of work related to traffic safety and congestion. The first area involves analyzing existing data on personal injury collisions, including: - STAS19 data detailing when and where collisions occurred, - TRIS data showing traffic volumes and speeds before and after these incidents, - Any relevant records from the Traffic Officer service regarding traffic management actions taken post-collision and their duration. The second area requires examining standard transport theories, such as queuing theory, to assess whether the data collected can be integrated into these theories. This will help develop a method for calculating lost journey time and changes in vehicle operating costs due to reduced speeds. If the second area of work does not yield successful results, a potential third area may involve applying various mathematical models to the observed data to create a method from foundational principles.