Tools to Address Speeding
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
- Relatively cheap to install.
- Effective at reducing speeds.
- Effective at reducing volumes.
- Temporary versions exist.
- 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|
|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|