County of Hawai`i - Traffic and Roadwork

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 Speed Hump Installation Request

 

Application Packet

 

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.