Design Constraints & Guidelines

Enforcement efforts and traditional traffic engineering practices alone do not effectively modify motorist driving behavior
Bypass traffic avoiding designated collector or arterial roadways by using local roadways
Access for pedestrians, bicyclists, and other non-motorized users
Preserving emergency vehicle access
Access for buses (AC Transit, Paratransit), trash collection, moving vans, and construction (private and public) equipment
The effect of the device upon street sweeping operations
Potential loss of on-street parking
Diversion of traffic to other nearby residential local and collector roadways
Increase in or concentration of noise levels due to the traffic calming device
Potential changes to community character (street lighting, loss of on-street parking, signage, and roadway surface and alignment)
Sight distance obstructions related to landscaping, fences, roadway alignment, etc. Appropriate recovery-area spacing between devices
The proximity to other calmed areas and intersections
Acceptance of property owners on adjoining and parallel roadways
Availability of funding for the installation of traffic calming measures
Timing of proposed improvements with respect to the on-going resurfacing program