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Gnicanes <br />A chicane is a curb extension, usually built in <br />alternating patterns or with intermittent median <br />strips, that creates an S-shaped curve on a street. <br />These minor curves require motorists to proceed <br />with greater caution and slower speeds. They may <br />also provide additional space for landscaping or <br />pedestrians. Some chicanes are concrete curbs, <br />while others are painted on the roadway. <br />Speed Humps & Speed Tables <br />Speed humps are rounded vertical traffic calming <br />features common on residential streets, and may be <br />used to control speed along a corridor. <br />Speed tables are similar mesa -shaped features that <br />may be configured as raised crossings, as shown <br />above. If configured as a raised crossing, the speed <br />table should be elevated so that it is flush with the <br />sidewalk and/or multi -use trail. <br />Traffic Circles <br />Traffic circles are generally used to replace a 4 -way - <br />stop intersection. Traffic circles can improve safety <br />as well as travel times and intersection efficiency. <br />Many drivers are not familiar with traffic circles so <br />signage can help them to navigate the intersection. <br />Many traffic circles are built with mountable curbs <br />so that emergency vehicles may quickly and easily <br />proceed through the intersection. <br />Diverters <br />A diverter diverts motor vehicle traffic from one <br />street to another while allowing pedestrian and <br />bicycle traffic to proceed normally. They are most <br />common parallel to arterial streets where <br />congestion may lead motorists to seek alternative <br />routes on local streets through a neighborhood. <br />Common on bike routes, diverters are the most <br />intense traffic calming treatment applied and <br />should be implemented only after study and <br />community outreach. <br />Safe Routes to School Infrastructure Glossary Page 18 <br />