Traffic Calming
Chicanes are a type of "horizontal deflection" used in traffic calming schemes to reduce the speed of traffic. Drivers are expected to reduce speed to negotiate the lateral displacement in the vehicle path. There are several variations of traffic calming chicanes, but they generally fall into one of two broad categories:
- Single-lane working chicanes, which consist of staggered buildouts, narrowing the road so that traffic in one direction has to give way to opposing traffic
- Two-way working chicanes, which use buildouts to provide deflection, but with lanes separated by road markings or a central island.
Limited accident data for chicane schemes indicate a reduction in injury accidents (54%) and accident severity.
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