Design and Traffic Control Guidelines for Low-Volume Rural Roads

摘要

The research evaluates the safety needs on low-volume rural roads. Based on a series of functional analyses relating safety performance to specific design and operational elements, a set of revised guidelines was developed. The revised guidelines apply to total roadway width, horizontal curvature, roadside design, speed signs, curve warning signs, centerline markings, and no-passing stripes. These guidelines are proposed to supplement the existing national policies, with each revised guideline either replacing or clarifying the existing national guideline. The widespread application of the revised guidelines should provide for more consistent design and traffic control of low-volume rural roads consonant with a rational balance between highway investment, highway safety, and traffic service.