• Aisle, Traffic: A portion of a parking facility used for vehicle travel to and from stalls, or between street, stalls, and building(s) served.

• Aisle, Pedestrian: Those portions of a parking facility reserved exclusively for pedestrian use; also the other routes normally used by pedestrians between stalls and buildings. Exclusive-use pedestrian aisles typically are protected routes such as raised walkways and designated controlled lanes between or across rows of stalls. Nonexclusive pedestrian aisles include routes coinciding with traffic aisles.

• Angle of Parking: The angle (in degrees) between the line delineating the side of a stall and a line at the top of the stalls and parallel to the traffic aisle served by the stalls.

• Berm: A raised asphalt concrete curb-like bumper. Intended only for marking edges of an area; is not strong enough to deflect a straying vehicle.

• Controlled Parking: Permit parking, validated parking, pay parking, parking restricted to employees only, and other parking that is not for the free use of the general public.

• Capacity: The number of vehicles a parking area holds within designated stalls; or gross vehicle weight in parking structure/parking deck.

• Dead Area: A portion of a parking facility not usable for parking lot striping stalls or traffic aisles. Dead areas may be used for pedestrian aisles, lighting, landscaping, or other improvements.

• Delineation: Line marking.

• Density: The number of vehicles per area of given size. May be used to compare one parking facility’s capacity efficiency with another’s.

• Depth, Stall: The distance (at right angles to the traffic aisle) from the top of a stall to its traffic aisle edge.

• Double Row: Two single rows forming a unit. A double row is normally located in the interior area of a parking facility, where it forms an island between traffic aisles. Usually the two single rows are adjacent and vehicles in one single row are separated from those in the other by painted central division lines. Sometimes a pedestrian aisle or other physical barrier provides the separation.

• Double-Loaded Traffic Aisle: A traffic aisle with accessible stalls on both sides.

• Egress: Exiting.

• Entrance; Exit: An area used for vehicle ingress/ egress from a parking facility. Usually located on public property and connecting with a street or road.

• Esthetics: Considerations of attractiveness and good taste.

• Exit; Entrance: An area used for vehicle egress/ingress to a parking facility. Usually located on public property and connecting with a street or road.

• Ingress: Entering.

• Layout: The placement of stalls, aisles, fixtures, and improvements within a parking facility.

• Ninety-Degree Parking: Head-in or rear-in parking in which the vehicle body is at right angles to a line across the top of the row of stalls.

• Overhang: The distance from the striking face of a wheel stop to the property line or wall. Similarly, a vehicle would extend this distance over a curb.

• Overlap: The distance gained at the centerline of a double row of vehicles where the alternate traffic aisles are intended for vehicle traffic in opposite directions.

• Parallel Aisles: Two or more aisles which run in the same direction. For example, if two aisles both run east and west, they are parallel.

• Parking Angle: The angle (in degrees) between the line delineating the side of a stall and a line at the top of the parking lot striping stalls and parallel to the traffic aisle served by the stalls.

• Pedestrian Aisle: Those portions of a parking facility reserved exclusively for pedestrian use; also the other routes normally used by pedestrians between stalls and buildings. Exclusive-use pedestrian aisles typically are protected routes such as raised walkways and designated controlled lanes between or across rows of stalls. Nonexclusive pedestrian aisles include routes coinciding with traffic aisles.

• Permit Parking: Parking in which authorized users possess permits.

• Seal Coating: A coating which seals a pavement’s surface.

• Single Row: A row of adjacent stalls. Usually located on the perimeter of a parking facility.

• Single-Loaded Traffic Aisle: A traffic aisle with accessible stalls on only one side.

• Stacked Parking: Parking in which the first-in vehicle in a given chain of vehicles may not be removed without first moving one or more later arriving vehicles in the chain. Used to increase capacity in a parking facility where space is at a premium.

• Stall: A portion of a parking facility designed to hold one vehicle, and marked, usually by lines painted on pavement, for that purpose.

• Stall Depth: The distance (at right angles to the traffic aisle) from the top of a stall to its traffic aisle edge.

• Stall Width: The distance between the two side lines of a stall, measured at right angles to the two lines.

• Traffic Aisle: A portion of a parking facility used for vehicle travel to and from stalls, or between street, stalls, and building(s) served.

• Traffic Flow: The pattern of traffic movement through an area or through a parking facility.

• Turnover: The number of vehicles which use a given space of facility in a given time period.

• Validated Parking: Parking in which a user’s parking ticket must receive an official stamp to waive parking fees.

• Wall to Wall Dimension: The distance (passing across a traffic aisle at right angles to the aisle) from the farther end of a vehicle parked on one side of the traffic aisle to the farther end of a vehicle parked on the other side.

• Wheel Bumper: A block installed at the end of a parking stall to provide tactile identification of the end of the stall when the driver feels his wheel contact the block.

• Width, Stall: The distance between the two side lines of a stall, measured at right angles to the two lines.