Federal Highway Administration’s June 2010 “Road Diets” Report

The USDOT’s Federal Highway Administration (FHWA) recently released a report that reviewed the safety record of lane reduction projects in California, Washington and Iowa.  Their analysis confirms that lane reduction projects calm traffic and reduce traffic collisions. 

And the FHWA report also confirms that rechannelizations don’t adversely impact roadway capacity.  It states, “Under most annual average daily traffic (AADT) conditions tested, road diets appeared to have minimal effects on vehicle capacity because left-turning vehicles were moved into a common two-way left-turn lane (TWLTL).”

You can read the full document, entitled “Evaluation of Lane Reduction ‘Road Diet’ Measures on Crashes,” by clicking here.