In the past decade, many innovative intersection designs aimed at accommodating multimodal transportation, reducing conflicts between moving vehicles and vulnerable road users, and lowering impact force (reducing vehicle speed and changing collision angle) in the event of collision, have been conceived and implemented. These approaches include the complete street design, the protected intersection design, various types of curb extension designs, and the safety system from Sweden. Although these innovative designs have been introduced to the U.S. audience, at the U.S. Department of Transportation (USDOT) level, no formal evaluation has been done to assess the effectiveness of any such design. This project is the first effort in initiating a formal and comprehensive evaluation of select innovative intersection retrofitting designs aimed at improving the safety of pedestrians and bicyclists while maintaining good level of service to motorized traffic.

The objectives of this project include:

1. Conduct a synthesis of the innovative intersection retrofitting designs that benefit pedestrians and bicyclist while maintaining reasonable level of service to motor vehicles.
2. Select two to three designs for formal evaluations, the scope of work includes developing design templates and recommended site conditions, recruiting state/local agencies interested in trying such designs to provide suitable sites and implement the designs for evaluation.
3. Evaluate the operational and safety improvement of the select designs based on field results and produce design guides, and develop benefit to cost ratios (B/C).
4. Develop a half-day training course for the evaluated designs, and do an instructor led pilot training to a class of 25 or more participants from federal, state, and local agencies.

• 693JJ319F000377

• Safety

• FY 2002-2022 / Safety / Safety Design and Operations

• Evaluation of Low Cost Safety Improvements Pooled Fund Study