Going on a Road Diet
Source: Public Roads Magazine
The road diet approach involves narrowing travel lanes or shoulders or eliminating some of them to provide more space for pedestrians and bicyclists. A typical road diet consists of converting a four-lane roadway (two in each direction) to a three-lane (one in each direction plus a center turn lane) and adding sidewalks and/or bicycle lanes. At times, this reconfiguration can be accomplished by simply restriping the lanes in conjunction with a resurfacing project.
This article provides examples of road diet projects that have been implemented across the US, noting the benefits of these treatments and next steps for research.