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General

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Legacy ID
21

Design & Construction

This section highlights the following items that are important elements of rumble strip design.

  • Crash types to mitigate
  • Facility type (freeway, multi-lane, two-lane)
  • Dimensions of rumble strips
  • Types of rumble strips (shoulder, edge, center line)...

Safety

More than half (57 percent) of U.S. traffic fatalities occur after a driver crosses the edge or center line of a roadway. Two-thirds (65 percent) of these fatal crashes occur in rural areas.

WHAT CAUSES ROADWAY DEPARTURES?

Many factors contribute to drivers leaving the roadway...

Case Studies and Noteworthy Practices

Case Studies

Every Day Counts (EDC) Initiative: City of Bellevue, Washington State
The Federal Highway Administration's Every Day Counts (EDC) initiative identified HFST as an innovation that enhances roadway safety and, as such,...

Continuous Pavement Friction Measurement (CPFM)

The friction provided by a roadway surface affects how vehicles interact with the roadway. Measuring, monitoring and maintaining pavement friction can prevent many roadway departure and intersection related crashes, resulting in fewer serious injuries and fatalities.

More than 50 years...

Friction Management

The main purpose of a pavement friction management program is to minimize friction-related vehicle crashes by:

  • Ensuring that new pavement surfaces are designed, constructed, and maintained to provide adequate and durable friction properties;
  • Identifying and correcting...

High Friction Surface Treatments (HFST)

High friction surface treatments (HFST) are pavement treatments that dramatically and immediately reduce crashes, injuries, and fatalities associated with friction demand issues, such as:

  • A reduction in pavement friction during wet conditions, and/or
  • ...

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...