ABSTRACT
This chapter describes the toolbox of measures that are available to cities and counties developing traffic calming programs and plans. It contains different measures that address neighborhood traffic-related concerns such as speeding vehicles, high traffic volumes, cut-through traffic, and collisions at intersections. Predicting traffic volumes in area-wide applications is critical to full public disclosure of potential impacts, analysis of traffic calming alternatives, and refinement of traffic calming plans. Volume impacts depend fundamentally on the split between local and through traffic. Traffic calming measures will not affect the amount of locally bound traffic unless they are as severe or restrictive as to "degenerate" motor-vehicle trips. Geographic information systems (GIS) can be used to estimate changes in travel time, and from them changes in traffic volumes, for facilities affected by traffic calming. TrafficCalming: State of the Practice discusses the pros and cons of both warrants and guidelines and leans toward guidelines as a more flexible alternative.
