The objective of this manual is to assist agencies in finding effective ways to allocate safety improvement funds on high risk rural roads (HRRR) to achieve a greater reduction in the number and severity of rural roadway crashes. This manual provides an extensive list of safety treatments, and includes the following information related to the treatments:

• Safety benefits.
• Cost-effectiveness comparison.
• Applicability of treatment deployment with respect to identified need.
• Initial and reoccurring maintenance costs associated with countermeasure installation.
• Decision-making process for treatment selection.

Due to the large number of treatments presented, as well as the large number of potential treatments not included, the manual includes a matrix and decision flow chart to determine a range of potential treatment options. It also includes overviews of safety program management, potential funding sources and funding processes, and decision-making tools for selecting appropriate safety treatments for given crash types and roadway characteristics.