Analysis of forecasted travel time benefits against those realised

There is lack of knowledge on how well the transport projects work once implemented. This research project seeks to investigate how the forecasted benefits claimed during the economic appraisal of the projects compare with the actual benefits realised. This study carried out a literature review on how the travel time benefits are forecasted for transport investment projects and comments on general to specific issues like value of travel time, international and local experiences of forecasting travel time savings to use of traffic modelling in forecasting travel time savings. The study also carried out a post-construction evaluation of projects on a diverse range of transport projects from realignments, grade separated interchange to the installation of HOV lanes and urban bypass project. Post-construction analysis was carried out and then compared against those assumed for the pre-construction evaluation and possible reasons for the differences were discussed