Technology to Enhance Speed Limit Compliance

The role of speed in crash and injury risk is well established in road-transport system safety. This paper reviews the technologies available world-wide to enhance speed limit compliance. Speed indicator displays are a promising technology to reduce vehicle speeds, and have been shown to reduce average vehicle speeds in European trials. The benefit-cost ratios for using speed indicator displays in Victoria were calculated for a range of common scenarios in Victoria. These calculations show that very attractive benefit-cost ratios can be realised from reductions in vehicle speeds, through the use of speed indicator displays in such circumstances.