Committee calls for multi-modal flexibility in AASHTO roadway design guidelines

“We have seen consistent growth in walking and biking throughout the country, and we also have seen an increase in crashes and fatalities involving them,” says Kirk Steudle, committee chair and director of the Michigan Department of Transportation. “Our state agencies need robustly-researched guidance on how to best incorporate all modes of travel when designing safe and efficient roadways that serve all users.” The Green Book includes “research-based, peer-developed guidance that serves as the basis for the design of roads on the National Highway System, as well as many state and local roads.” AASHTO says it is currently being updated.