Raised Intersections

Image Source: NACTO

DEFINITION AND DESCRIPTION

A raised intersection functions like a speed table but extends across the full width of the intersection.. Ramps are installed on each approach, and the intersection elevation is flush with the sidewalk’s elevation. Raised intersections encourage motorists to slow down and yield to pedestrians.

Implementation Categories

CONSIDERATIONS

• Do not use at intersections with steep grades.
• Curb ramps must comply with PROWAG and include detectable warning surfaces for visually impaired users at crossings.
• Design to accommodate drainage.

APPLICATION

• May be considered at intersections with high pedestrian activity.
• Elevate the intersection upstream of the pedestrian crossing. The intersection is typically elevated 3 inches over a distance of at least 6 feet.
• Install appropriate pavement markings. See Chapter 3B in the MUTCD for details.
• Add bollards to intersections corners to deter motorists from driving onto sidewalks.

example

Image Source: Delaware Department of Transportation

Complimentary SSA Strategies

• Leading Pedestrian Interval (LPI)
• Vertical Deflection — Speed Hump
• Vertical Deflection — Speed Tables and Raised Crosswalks
• Human Factors Guidance – Speed Calming Countermeasures at Crosswalks