Economic Effects of Restricting Left Turns

This digest summarizes the findings from the final report on National Cooperative Highway Research Program (NCHRP) Project 25-4, Economic Effects of Restricting Left Turns, conducted by Cambridge Systematics, Inc., JHK & Associates, Inc., and HBRS, Inc. G.E. Weisbrod and R. Neuwirth were the principal investigators. This digest will help analysts assess the effect of left-turn restrictions on businesses and describes ways to mitigate those effects. The digest will be of interest to those planning, designing, and constructing left-turn restrictions, regardless of whether the projects are permanent or temporary (in the latter case, being the result of construction or maintenance). The final report for this project will not be published but a copy has been sent to each state's department of transportation.