According to the "Urban Road On-Street Parking Space Setting Standards," the standard size of a general parking space is determined based on the size of the vehicle. Small parking spaces typically measure 2.5–2.7 × 5–6 meters. The width of a single-lane turning lane should be no less than 3.5 meters, while a double-lane turning lane should be no less than 5 meters. The turning section should accommodate a vehicle's one-time turning need. For safety or to accommodate medium and large vehicles, the length is often set at 6 meters or more. Details are as follows: (Length ≤ 6m, width ≤ 1.8m): The minimum spacing between vehicles should be no less than 0.5 meters, and the spacing between the vehicle and walls or the end of the parking space should also be no less than 0.5 meters. (6m < length ≤ 8m, 1.8m < width ≤ 2.2m): The minimum spacing between vehicles should be no less than 0.7 meters. Small vehicle parking space: Length ≥ 5 meters, width 2.2–2.5 meters. Large vehicle parking space: Length 7–10 meters, width 4 meters, depending on the vehicle type. According to the "Architectural Design Standards for Parking Garages," the specific dimensions for small car indoor parking spaces are as follows: The design dimensions for small cars are 4.8m (length) × 1.8m (width) × 2.0m (height). For perpendicular parking, the minimum parking space size should be 5.3m (length) × 2.4m (width), with a minimum driveway width of 5.5m in front of the space. The minimum distance between small cars and side walls should be 0.6m, and the distance to front and rear walls should be 0.5m. Modern underground parking garages have large floor areas and numerous parking spaces. To ensure smooth vehicle movement, driveways are planned to be relatively wide. Driveways, as horizontal passages dedicated to parking spaces, account for the primary floor area allocated to parking spaces, often occupying 50% or more of the total parking space floor area. Parking space arrangements can be categorized into three types: parallel, angled (30°, 45°, 60°), and perpendicular. Large vehicle parking spaces should not use angled or perpendicular arrangements. Details are as follows: Parallel parking space: Standard length of 6 meters, width of 2.5 meters. Angled parking space: Diagonal length of 6 meters, width of 2.8 meters, with a perpendicular distance of 2.5 meters between the two diagonal lines. Perpendicular parking space: Length ≥ 5 meters (typically 6 meters), width of 2.5 meters. The optimal standard size is 2.5 × 5.3 meters. The "Road Traffic Safety Law" stipulates that on-street parking spaces should not be set on roads with a width of less than 6 meters for motor vehicle passage. Crosswalks, expressways, and main roads are also prohibited from having parking spaces. On urban roads, government authorities may designate parking spaces where pedestrian and vehicle traffic is not obstructed. On-street parking spaces should not interfere with non-motorized vehicle traffic or encroach on their space. They should not be set near intersections, building entrances, or bus stops. Parking regulations, including vehicle types and time limits, should be clearly indicated with signs. Measures should be taken to avoid obstructing motor vehicle traffic. Additionally, on-street parking spaces should not be equipped with ground locks to prevent private occupation. Roads prohibiting on-street parking may have barriers, posts, or other isolation facilities. After removal or cancellation, parking signs, markings, and other management facilities should be promptly cleared to prevent illegal parking and ensure road safety. Furthermore, on-street parking spaces should not be set within 200–300 meters of off-street public parking lots. Quantitative regulations for on-street parking spaces: The "Urban Road On-Street Parking Space Setting Standards" provides quantitative regulations based on road width. For two-way roads, if the actual width exceeds 12 meters, parking spaces may be set on both sides; if between 12 and 8 meters, on one side; if less than 8 meters, no parking spaces. For one-way roads, if the actual width exceeds 9 meters, parking spaces may be set on both sides; if between 9 and 6 meters, on one side; if less than 6 meters, no parking spaces. Regarding disabled parking spaces, the standards require that on-street parking spaces should include disabled parking spaces, accounting for no less than 2% of the total. If there are more than 20 parking spaces, at least one disabled parking space should be provided. Parking space marking colors: White: Paid parking spaces; Blue: Free parking spaces; Yellow: Reserved parking spaces; Time-limited parking spaces: Dotted border, line width of 10cm; the permitted parking time should be marked inside the border, with numbers 60cm high. Disabled parking spaces: Special markings; yellow grid lines on both sides indicate no-parking zones for boarding/alighting; other vehicles must not occupy disabled spaces. The yellow grid width is 120cm, with outer lines 20cm wide and internal fill lines 0cm wide, at a 45° angle to the outer lines. The outer line length should match the parking space marking length. Requirements prohibiting on-street parking spaces: Fire lanes, sections with no-parking signs/markings, or construction zones obstructing traffic; Roads designated for disaster relief or emergency evacuation; Sidewalks (if set, must not encroach on blind paths); Near building entrances; Intersections, railway crossings, sharp curves, narrow roads ( < 4m), bridges, steep slopes, tunnels, or within 50m of such locations; Within 30m of bus stops, emergency stations, gas stations, fire hydrants, or fire stations (except for facility use); Within 20m of intersection channelized areas; Near underground utility access points or within 15m of such locations; Within 200m of off-street parking lot entrances; Near road edges.
