Hawaii County, HI Public Works
Home PublicWorks MenuSpeed Hump Application
The current criteria used for approving speed hump installations include:
- Residential local road;
- Posted speed limit not exceeding 25 mph;
- Overall street grade not exceeding 13%;
- Average daily traffic (ADT) between 200 and 3,000 vehicles per day;
- 85th percentile speed over the posted speed limit;
- Minimum 67% support of the adjacent property owners and 100% support of the property owners with a speed hump in front of their property;
- Support of the installation by the HPD and HFD; and
- Traffic study and design performed by the Department of Public Works.
Click here for the Application Package.