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Neighborhood Traffic Management Program (NTMP)

Tools to Address Speeding

Speed Humps

Speed humps are paved (usually asphalt) and approximately 76 to 102 mm (about 3 to 4 in) high at their center, and extend the full width of the street with height tapering near the drain gutter to allow unimpeded bicycle travel. Speed humps should not be confused with the speed "bump" that is often found in mall parking lots. There are several designs for speed humps. The traditional 3.7-m (12-ft) hump has a design speed of 24 to 32 km/h (15 to 20 mi/h), a 4.3-m (14-ft) hump a few miles per hour higher, and a 6.7-m (22-ft) table has a design speed of 40 to 48 km/h (25 to 30 mi/h). The longer humps are much gentler for larger vehicles.

-Pedestrian and Bicycle Information Center

Rubber based speed hump

Easy to setup and remove

Speed humps temporary installation

Temporary Installation

Standard residential speed hump

Speed humps permanent installation

Permanent Installation

PROS

  • Relatively cheap to install.
  • Effective at reducing speeds.
  • Effective at reducing volumes.
  • Temporary versions exist.

CONS

  • Not suitable for sharp curves or steep grades.
  • May impact buses.
  • May create delays for emergency response vehicles.
  • May increase traffic noise.
  • May create drainage problems.
  • May divert traffic to adjacent roads.
Summary of Effectiveness
Volume Reduction Possible
Speed Reduction Yes
Safety Improvement Possible
Streets to Use On Collector, Local Local
Use on Bus Route No
Use with Curbs and Gutters Yes
Spot or Area-wide Use Both
Emergency Service Access Issues Yes
Impacts on Arterials Yes
Change in % Truck Yes
Environmental Changes > Noise
Dependence on enforcement No
Level of Violation N/A
Aesthetics and Landscaping Eyesore