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Intersection Chokers <br />Roadway Adjustments <br />Purpose <br />Narrowing of the street at an intersection to constrain <br />the width of the traveled way. They provide shorter <br />pedestrian crossing distances and provide protection <br />to the beginning of a parking lane. The driver also <br />senses the roadway narrowing when approaching <br />one of these measures, which can result in speed <br />reduction and a reminder that the driver is entering a <br />residential area. <br />Source: Institute of Transportation Engineers <br />Traffic Calming: State of Practice <br />Effects <br />Volumes <br />Little or no effect. <br />Speed <br />Minimal changes. <br />Traffic Noise and Air <br />Little or no effect. <br />Traffic Safety <br />Potential for improved pedestrian safety due to shorter street crossing <br />times, but at the same time bicycle safety may be compromised by <br />physically removing part of the pavement surface. <br />Advantages <br />• Good for pedestrians due to shorter crossing distance <br />• Provides space for landscapingand neighborhood “gateway”. <br />• Should not affect emergency responsetime. <br />• Minimal inconvenience to drivers. <br />Disadvantages <br />• May require the prohibition of on-street parking causing hardship or <br />inconvenience for residents. <br />• May cause bicyclists to travel in same traffic lane as vehicles. <br />• May require redesign of drainage system. <br />Problems Targeted <br />• Mid-block locations with speeding and/or cut-through traffic <br />Design <br />• There must be adequate turning radius for emergency vehicle access <br />especially on narrow streets. <br />•Drainage structures must be relocated to fit into new curb line. <br /> <br />