About Speed Humps
| Policy | Specifications (pdf / 46kb / 1 page) |
Their characteristics
- 3" tall by 12’ long in the direction of travel
- Extend the entire width of the street
- 12" painted reflective white stripes across
- Spaced 250’-350’ apart
- Designed to be driven comfortably at 15 mph
Advantages
- Decrease average speed 5-10 mph
- Sometimes can decrease the number of cars using the road
- Works 24 hours a day, 365 days a year
- Cost is reasonable
Disadvantages
- All drivers must drive over them; speeders and non-speeders
- Traffic noise from: rapid braking, rapid accelerating, objects bouncing in truck beds
- Drivers might drive "around" them, onto shoulders, sidewalks, or landscaped areas
- Street sweepers may leave some dirt and debris residue at humps
- Some rainwater may be retained
- They are not aesthetic, some people object to their appearance
