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• Conflict points between pedestrians and vehicles should be <br />minimized. <br />• Consistent with safety and livability, a minimum area should <br />be devoted to streets. <br />• The number of intersections should be minimized. <br />• Local street layout should permit economical development of <br />land and efficient lot layout. <br />• Local streets should be responsive to topography and other <br />natural features from the standpoint of both economics and <br />amenity. <br />• Residential areas should provide for public transit service <br />where appropriate. <br />• Streets should be designed to accommodate local emergency <br />services. <br />• Pedestrian movements, nonmotorized vehicle (i.e., bicycle) <br />movements, and truck deliveries should be accommodated. <br />• The residential street should enhance the community's vis- <br />ual image. <br />Number of Lanes <br />On residential streets in areas where the primary function is to <br />provide access and foster a safe and pleasant environment, street <br />design should ensure at least one unobstructed moving lane, even <br />if parking is available on both sides. The level of user inconve- <br />nience occasioned by the lack of two moving lanes is remarkably <br />low in areas where single - family units dominate. Local residential <br />street patterns are such that travel distances are usually less than <br />0.5 mile between the point of trip origin and a collector street. In <br />high- density (multifamily) residential areas, a minimum of two <br />moving lanes may be required to accommodate opposing traffic. <br />In many residential areas, a local street is designed for a center <br />travel lane and a parking lane on either side. Oncoming traffic <br />pauses and yields in the parking lanes until there is sufficient <br />width to pass. <br />A major distinction between the local street (access street or <br />subcollector) and the collector revolves around parking consider- <br />ations. While the local street permits two parking lanes or parking <br />within one of the two moving lanes, the collector requires two <br />continuous unobstructed moving lanes at all times to accommo- <br />date greater traffic volumes (Bucks County, 19801. <br />Moving lanes should be at least 10 feet wide and parking lanes <br />should be eight feet wide. On local residential streets where two <br />parking lanes flank one moving lane and parking is expected to <br />line both sides of the street continuously, the width of the moving <br />lane should be increased to 12 feet. If the demand for on- street <br />parking on both sides of the street is only occasional, an increase <br />Page 11 <br />Design Considerations 35 <br />