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<br />I Roadway Adjustments <br /> <br />Narrowing Lanes <br /> <br />Purpose <br />The reduction of the typical pavement width <br />along a roadway. The narrowing can be achieved <br />physically by removing part of the pavement <br />surface or by simply using pavement markings to <br />indicate narrow travel lanes. <br /> <br />Effects <br />Volumes Little or no effect <br />Speed Possible reduction in speed <br />Traffic Noise and Air Little or no effect <br />Traffic Safety 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 o Use of pavement markings to narrow street is relatively inexpensive ($0.20 per <br /> lineal foot). <br /> o Narrowing of street may provide opportunity for street beautification programs <br />Disadvantages o May require the prohibition of on-street parking causing hardship or <br /> inconvenience for residents <br /> o May result in shifting volumes to adjacent streets if number of lanes is reduced <br />Problems Targeted o Wide residential streets where speed reduction is desired <br /> o Excess street volume on multilane streets <br />Design o Must not create significant impact due to loss of parking <br /> <br />APRIL 2005 <br /> <br />24 <br />