Crash Risk and Access Spacing on Two-Lane and Multi-Lane Highways
Hitesh Chawla; Peter T. Savolainen, Ph.D., P.E.
Effective access management is essential to mitigating traffic crash risks. Most of the crashes occurring near access points are a result of conflicts between multiple vehicles. This motivates the development of guidelines for access spacing. To this end, this study evaluated the relationship between crash risk and access point spacing on two-lane and multi-lane highways across the state of Iowa.