Managing speed : review of current practice for setting and enforcing speed limits.

In 1995 Congress repealed the National Maximum Speed Limit (NMSL) of 55 mph (89 km/h), returning to the states the responsibility for setting speed limits on major highways. Since then, 49 state legislatures have taken the opportunity to raise speed limits on Interstate highways — and, in some cases, on other major roads — often to levels that had been in effect before the NMSL was established in 1974. The primary objective of this study — requested and funded by the National Highway Traffic Safety Administration, the Federal Highway Administration, and the Centres for Disease Control and Prevention — is a review of current practice for setting and enforcing speed limits on all types of roads, not just major highways. (Author/publisher)