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Roadway Adjustments Mid -Block Narrowing <br />Purpose <br />Segment(s) of roadway narrowing where curbs <br />are extended toward the center of the roadway <br />on one or both sides of the street to constrain the <br />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. <br />a <br />YI�II YIYp <br />So unce l nstitute o f Tran a go rtati on Engineers <br />Traffic Calming: S to to 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 times, but <br />at the same time bicycle safety may be compromised by physically removing part <br />of the pavement surface. <br />Advantages <br />• Good for pedestrians due to shorter crossing distance <br />• Provides space for landscaping <br />• Does not affect emergency response time <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 create drainage issues where curb and gutter exist <br />• May create diversion for bicyclists <br />Problems Targeted <br />• Mid -block locations with speeding and /or cut - through traffic <br />Design <br />• Must not significantly impede emergency vehicle access <br />