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Spacing Location Land Access Urban Rural Intersection Characteristics Parking Large trucks Management tools System Mileage Per cent of Travel (VMT) Vehicles carried Urban Rural Posted Urban speed Limit Rural Right -of -way Transit Accommodations Principal Arterial 3.6 miles depending on trip density. transit. minor arterial spacing. d location of existing facilities. in natural community separations defining development and not separating it None. None Grade separated (urban) or high capacity controlled at grade inter- sections (rural). None. No restriction. 20,000-100,000 5.000- 50,000 45 -55 Legal limit 300' Prority to high occupancy vehicles and transit in peak periods. FUNCTIONAL CLASSIFICATION SYSTEM CHARACTERISTICS FOR ROADWAYS Intermediate Arterial 1.3 miles depending on spacing of princi- pal arterials and minor arterials, transit. trip density. and location of existing facilities. In natural community separations defining developments and not separating it. Major traffic generators. Freestanding Growth Centers and Rural Town Centers Grade separated or high- capacity con- trolled at -grade intersections. None No restriction. Table 12 Ramp metering. traffic signal timing. staging of reconstruction, land access spacing. Ramp metering. traffic signal timing. no land access. preferential treatment for transit, interchange spacing. Suggested federal upper limits for principal arterials and intermediate arterials combined: Urban 10 per cent Rural 4 per cent Suggested federal limitations for principal arterials and intermediate arterials combined: 40-65 per cent 10.000- 50,000 2,500 - 25.000 35-50 Legal limit 100' -300' Preferential treatment where needed: bus stops separated from through traffic lanes. 64 Minor Arterial 0.5.2.0 miles On edges of development and neighbor- hoods. Limited direct land access. Commercial, industrial, and high - density residential uses. No access to single family use. Traffic sig- nals and cross street stops. Restricted as necessary. Restricted as necessary. Traffic signal timing. land access spacing. preferential treatment for transit. Suggested federal 'limitations for principal arterials, intermediate arterials. and minor arterials combined: Urban 15 -25%. Rural 6.12% Suggested federal limitations for principal arterials. intermediate arterials. and minor arterials combined: 65-80% 5,000 - 30,000 1,000-10.000 35 -45 Legal limit 66' -150' Preferential treatment where needed in activity centers: bus pullouts where required based on percentage and traffic volumes. Collector 0.25-1.0 miles. Local 1 block On edges or Within neigh - within borhoods and neighborhoods. other homo- genous land use areas. Some limitation on Direct direct land access. access. Access to • Direct land agricultural access. uses with limits on low- density residential. 4 -way stops and some traffic sig- nals. Loop street stops. Restricted as necessary. Restricted as necessary Continuity. number of lanes, traffic signal timing. land access. As required. Unrestricted. Permitted as necessary. Stop signs, cui -de -sacs. diverters. Suggested federal Suggested federal limitations: Urban limitations: Urban 5 -10%. Rural 20-35% 65.80 %. Rural 63-75% Suggested limitations: Suggested federal 5.10% imitations: 10-30% 1,000 - 15,000 1,000 250 -2.500 1,000 30-40 Maximum 30 35 -45 Maximum 30 66'-100' 50'•80' Pavement, in- Normally used tersections, as regional bus routes and bus stops only in non- designed for residential areas: use by regular used as required or transit buses. specialized transit service with smaller vehicles in residential areas.