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Neighborhood Traffic Management Program (NTMP)

Tools to Address Speeding

Raised Intersections

Top view of a street with Raised intersection

These are raised areas, which cover the entire intersection. They have ramped edges on all approaches and exits and can incorporate textured paving materials on the flat section.

The raised section is usually at sidewalk height or may be slightly below to provide a ridge for the visually disabled pedestrian. They make the entire intersection area a pedestrian oriented zone and are benefit from not impacting parking. They are a moderately expensive measure.

Raised intersections, sometimes called raised junctions, intersection bumps or plateaus.

No Temporary Versions Found

Temporary Installation

Raised intersection permanent installation

Permanent Installation

PROS

  • Creates more pedestrian friendly intersection.
  • Often used as part of area-wide plan.
  • Reduces speeds at location.
  • Do not reduce on-street parking demand.
  • Can enhance aesthetics.

CONS

  • Moderately high priced.
  • May be issues with emergency response agencies.
  • May increase noise.
  • Drainage issues problematic.
  • Need detectable ADA warnings
Summary of Effectiveness
Volume Reduction Unknown
Speed Reduction Yes
Safety Improvement Unknown
Streets to Use On Collector, Local Local/Collector
Use on Bus Route Yes
Use with Curbs and Gutters Yes
Spot or Area-wide Use Spot or Area
Emergency Service Access Issues Less than Humps
Impacts on Arterials Unknown
Change in % Truck Unknown
Environmental Changes Unknown
Dependence on enforcement None
Level of Violation Self-enforced
Aesthetics and Landscaping Can be Paved