The two main objectives for improving safety along horizontal curves are to
1. Reduce the likelihood of a vehicle leaving its lane and either crossing the roadway centerline or leaving the roadway and
2. Minimize the adverse consequences of leaving the roadway.

Many of the strategies identified to achieve these objectives are common strategies to reduce ROR and head-on crashes. In cases where the guides dealing with the ROR and head-on crash emphasis areas provide thorough coverage of a particular strategy, the reader is directed to the specific sections of those guides for more detailed information. If particular issues that pertain specifically to horizontal curves are not covered in the ROR or head-on guides, these issues are discussed within the text of this guide. The two main objectives for improving safety along horizontal curves are to
1. Reduce the likelihood of a vehicle leaving its lane and either crossing the roadway centerline or leaving the roadway and
2. Minimize the adverse consequences of leaving the roadway.

Many of the strategies identified to achieve these objectives are common strategies to reduce ROR and head-on crashes. In cases where the guides dealing with the ROR and head-on crash emphasis areas provide thorough coverage of a particular strategy, the reader is directed to the specific sections of those guides for more detailed information. If particular issues that pertain specifically to horizontal curves are not covered in the ROR or head-on guides, these issues are discussed within the text of this guide.

Further Reading:

A Guide for Reducing Collisions on Horizontal Curves