Summary of Access Management Impacts: Access Point Density and Raised Medians

摘要

Research across the United States has found that access management techniques, such as raised medians and low access point densities (i.e., access points per mile) typically provide for safer roads with lower crash rates than roads without access management. As the Texas Department of Transportation (TxDOT) recently continued making progress toward developing and implementing an access management program, it desired to identify crash rates specific to Texas. TxDOT is also interested in knowing what type of benefits can be estimated by using micro-simulation of access management techniques on arterial streets. Being able to estimate the impacts of an access management technique can assist decision makers in developing and selecting projects, as well as in communicating benefits of projects to the general public.