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Rest in Red | Safe Design

Rest in Red

DEFINITION AND DESCRIPTION

Under ‘Rest-In-Red’ (RIR) traffic signal operation, a traffic signal remains red in all directions until a green phase is triggered by a motorist or pedestrian. It is an effective, low-cost speed management tool under certain circumstances. Long-range detection enables anticipation of vehicles and changes the signal to green before a vehicle needs to significantly decrease its speed. It encourages safer speeds through intersections during late night and early morning hours. 

Implementation Categories

Area(s) Traffic Operations, TSMO
Safety Category 2

CONSIDERATIONS

  • Requires updating signals to include long-range detection.

APPLICATION

  • Use crash data and speed data to prioritize potential application sites with high pedestrian activity. 
  • Add/update signal equipment, implement, and monitor.

example

City of Portland. “Rest in red” traffic safety technology. https://www.portland.gov/transportation/vision-zero/rest-red#:~:text=%22Rest%20in%20red%22%20explained,-%22Rest%20in%20red&text=Traffic%20signals%20with%20%E2%80%9Crest%20in,do%20normally%20during%20the%20day.

complementary Countermeasures

REFERENCES AND RESOURCES

City of Portland. “Rest in red” traffic safety technology. https://www.portland.gov/transportation/vision-zero/rest-red#:~:text=%22Rest%20in%20red%22%20explained,-%22Rest%20in%20red&text=Traffic%20signals%20with%20%E2%80%9Crest%20in,do%20normally%20during%20the%20day.

Kim, Soyoung. Fox 12 Oregon. PBOT: ‘Rest on Red’ traffic sensor will be tested to slow drivers down. 2024, February. https://www.kptv.com/2024/02/23/pbot-rest-red-traffic-sensor-will-be-tested-slow-drivers-down/

Do you have more questions? Get in touch!

[wpforms id="3461"]

CONTACT:

Jill Asher

Research Engineer 

jill.asher@uky.edu