Three Lanes Good, Two Lanes Better? An Analysis of Unconventional Road Diet Typology in Los Angeles

Traditional road diets, which consist of converting a four-lane road to a three-lane road with a center turn lane, are widely regarded as a safety-enhancing solution across a wide variety of road contexts, even in high-volume streets. While traditional road diets are generally considered beneficial, there are concerns within certain sectors of LADOT that they’ve been excessively applied. Specifically, center turn lanes have been added seemingly without proper assessment, solely based on the availability of extra space and without consideration if the treatment was suitable for the specific streets in question. This research focused on whether the removal of a center-turn lane hinders safety goals.

Related Publications