Parking space sizes, layout, and surface rules

(a) Dimensions of parking spaces. (1) Standard parking spaces must be at least 18 feet in length and 8 feet 3 inches in width, with parallel spaces at least 22 feet in length. (2) Compact parking spaces must be at least 16 feet in length and 7 feet 6 inches in width, with parallel spaces at least 19 feet in length. (3) All provided parking spaces must be standard-sized parking spaces, except that single-unit, two-unit, duplex-unit, and multi-unit dwellings may have up to 50 percent of the total number of provided parking spaces as compact parking spaces, and accessory dwelling units may satisfy the parking requirement with a compact parking space. (4) Required parking spaces for boat launching ramps must have minimum dimensions of 40 feet in length and 12 feet in width. (5) Motorcycle and moped parking spaces must be at least 8 feet in length and 4 feet in width, and must provide a minimum 5-foot-wide access way clear of obstructions. (6) Minimum aisle widths for parking bays must be provided in accordance with Table 21-6.4 . Table 21-6.4 Parking Aisle Widths Parking Angle Aisle Width Table 21-6.4 Parking Aisle Widths Parking Angle Aisle Width 0 degrees to 44 degrees 12 ft. 45 degrees to 59 degrees 13.5 ft. 60 degrees to 69 degrees 18.5 ft. 70 degrees to 79 degrees 19.5 ft. 80 degrees to 89 degrees 21 ft. 90 degrees 22 ft. If the parking angle is 90 degrees, the minimum aisle width may be reduced by 1 foot for every 6 inches of additional parking space width above the minimum width of 8 feet 3 inches, to a minimum aisle width of 19 feet. (7) Ingress and egress aisles must be provided to a street and between parking bays. Driveways leading into a parking area must be a minimum of 12 feet in width, except that driveways for single-unit, two-unit, or duplex-unit dwellings, and internal one-way driveways connecting parking aisles must be a minimum of 10 feet in width. (b) Arrangement of parking spaces. (1) All parking spaces must be unobstructed; provided that structural support columns may extend a maximum of 6 inches into the sides of the parking space. A wall is not considered a structural support column. (2) Where five or more parking spaces are provided, the spaces or area must be designed or arranged in a manner so that no maneuvering into or from any street, alley, or walkway is necessary in order for a vehicle to enter or leave a space, and that allows all vehicles to enter the street in a forward manner. Parking spaces must be individually marked. Compact spaces must be labeled "compact only." (3) All parking spaces must be arranged so that any motor vehicle may be moved without moving another motor vehicle; provided that tandem parking is permissible in any of the following instances: (A) Where two or more parking spaces are assigned to a single dwelling unit, or a parking space is assigned to an accessory dwelling unit; (B) Where the parking spaces are used as employee parking; provided that the number of parking spaces allocated for employees must not exceed 25 percent of the total number of provided parking spaces, and employee tandem parking is limited to a configuration where only one vehicle must be moved to provide access to another vehicle; (C) Where all parking is performed by an attendant at all times, and vehicles may be moved within the lot without entering any street, alley, or walkway; or (D) For public assembly facilities and temporary events, where user arrivals and departures are simultaneous, and parking is attendant directed. (c) Surface materials. Off-street parking spaces, parking lots, and driveways must be maintained with a dust-free, durable, all-weather surface except in the preservation, agricultural, and country districts, where parking lots and driveways may be surfaced with crushed rock or limestone, or as determined by the director pursuant to Article 2 . Suitable dust-free all-weather surfaces may include but are not limited to permeable pavers, including grass-block, or similar systems; provided that the surface is maintained to prevent sediment, dirt, mud, or other debris from being transferred into the right-of-way.