When designed and installed with the proper planning and engineering review, speed humps have generally been found to be effective at controlling vehicular speed without increasing accident rates. These guidelines are designed to provide reasonable opportunities for the installation of speed humps on specified types of residential streets based upon technical criteria, the degree of support from the residents along the proposed street, and the street conditions. The following sections provide detailed information on the eligibility of streets and procedures for the installation of speed humps. While speed humps may be a viable option for reducing speeds on residential streets, residents should be aware of both the advantages and disadvantages of these devices. A. Advantages Traffic speeds are decreased at speed humps and generally between properly spaced successive humps.
Speed humps can have the greatest effect on vehicles with high speeds.
When speed humps are used in series and in combination with other traffic control devices along a roadway, they have been found to be effective in decreasing speed along that roadway. Speed humps discourage cut-through traffic. Traffic volumes on streets adjacent to streets where the speed humps are located may increase as drivers seek alternate routes to avoid speed humps. Speed humps may be perceived as the cause of vehicular damage. Gutter riding could be a potential problem.