How microsim illation unlocks the economic benefits of road improvement schemes

摘要

Microsimulation models have already been used to assist in the economic justification of road improvement schemes where the apparent benefits have been effectively locked away because of the difficulty of realistically representing and measuring them using traditional macroscopic software. Microsimulation methodology is well placed to properly implement DMRB and WebTAG guidance to ensure that some crucial aspects of scheme appraisal are not overlooked. The ability to accurately measure vehicle speeds is fundamental to economic scheme appraisal, and only microsimulation can differentiate between speeds in the manner required for proper reporting.