Road Diets

A “road diet” is the reallocation of an existing roadway. A typical road diet includes the conversion of a four-lane, undivided road into three-lanes. The fourth lane being converted often turns into either bicycle lanes, sidewalks, and/or on-street parking.

According to the HSIS Summary Report Evaluation of Lane Reduction "Road Diet" Measures and Their Effects on Crashes and Injuries, this type of engineering treatment has potential benefits to both vehicles and pedestrians. Road diets can reduce speed limits on a road, which could reduce the volume and severity of vehicle-to-vehicle crashes. Pedestrians may also benefit because they have fewer lanes of traffic to cross, and because motor vehicles are likely to be moving more slowly.