Appropriate Speed Limits for All Road Users

Variable Speed Limits

Enhanced Delineation for Horizontal Curves

About the Proven Safety Countermeasures Initiative (PSCi)

In 2008, FHWA began promoting widespread use of certain infrastructure-oriented safety treatments and strategies that can offer significant, measurable impacts as part of any agency’s data-driven, systemic approach to improving safety. FHWA updated the PSCi in 2012, 2017, and 2021, reaching a...

Proven Safety Countermeasures Resources

OVERVIEW FLYER »

Download the 2-page PSCi overview flyer.

PROVEN COUNTERMEASURES BOOKLET »

Pedestrian Hybrid Beacons

Reduced Left-Turn Conflict Intersections

Yellow Change Intervals

Leading Pedestrian Interval

Backplates with Retroreflective Borders