Strategies for Effective Roundabout Speed Reduction Status: CompleteReport Date: 12/29/2022 Summary: Appropriate deceleration on approaches to roundabouts is primarily accomplished through the use of applicable geometric design principles. However, traffic control devices (specifically signing and markings on approach) also serve a vital role in communicating to the approaching driver what speed profile should be anticipated. This research provides a resource for engineers to identify and select appropriate speed-reduction treatments for high- speed approaches to roundabouts. It examines best practices and techniques that are the most effective at lowering approach speed. Final Deliverables: Quick Reference Guide: Strategies for Effective Roundabout Speed Reduction (Guidebook #2022RIC03Q) Strategies for Effective Roundabout Speed Reduction (Report #2022RIC03) Related Materials: Related Research: Final Report 2017-14: Strategies for Effective Roundabout Approach Speed Reduction Signing for Effective Roundabout Approach Speed Reduction
