Access aisle
A marked, protected area beside an accessible parking space that provides room to enter, exit and use a mobility device.
Accessible route
A continuous path meeting applicable accessibility requirements between accessible spaces, entrances and other site elements.
Aggregate base
Compacted granular material supporting asphalt, concrete or another pavement surface.
Asphalt overlay
A new asphalt layer placed over prepared existing pavement.
Catch basin
A drainage structure that collects surface runoff and connects it to a storm system.
Cross slope
Slope measured perpendicular to the main direction of travel.
Curb ramp
A sloped transition between a raised pedestrian area and a lower vehicle surface.
Full-depth patch
Removal and replacement of failed pavement and, where needed, underlying base.
Geotextile
A fabric used for separation, filtration, drainage or reinforcement in earthwork and pavement systems.
Gross area per space
Total planning area allocated per usable parking space, including a share of aisles and circulation.
Infiltration
Movement of water into soil or a designed subsurface system.
Milling
Mechanical removal of a controlled depth of asphalt pavement.
Permeable pavement
A pavement system designed to allow water to pass through the surface into a stone reservoir or soil.
Photometric plan
A lighting design drawing or calculation showing predicted light levels and distribution.
Proof-roll
Controlled loading of prepared ground or base to identify weak or unstable areas.
Restriping
Renewing or changing parking-lot lines, symbols, arrows and other pavement markings.
Running slope
Slope measured in the direction of travel.
Sealcoating
Application of a protective surface coating to suitable asphalt pavement.
Subgrade
Prepared soil or earth surface supporting the pavement structure.
Type A space
Ontario terminology for a wider accessible parking space identified as van accessible under the applicable regulation.
Type B space
Ontario terminology for a standard-width accessible parking space under the applicable regulation.
Van-accessible space
An accessible parking space meeting the applicable wider-space or wider-aisle and vertical-clearance requirements for vans.
Wheel stop
A parking-space device intended to limit vehicle position or overhang; it is not automatically an impact-rated barrier.
Winter service level
The contract requirements for snow trigger, response time, plowing, de-icing, follow-up and priority areas.