Glossary of Roads & Transport Terms

This glossary is generated automatically. It displays the first paragraph of every page with the tag "definitions" & either of the tags "roads" or "transport". If you believe you have a better definition than the one given, please click on the link and edit the page it points to. If you would like to add a new term to the glossary create the page and add the tag "definitions" & either of "roads" or "transport" to it. Click here for a list of other subject specific glossaries. Acronyms are listed separately.

Access Lane - An access lane is a rear or side lane providing access to parking on lots with street frontage and/or short connections between access places or access streets principally to facilitate movement of service and emergency vehicles.

Access Place - An Access Place is a cul-de-sac or minor street providing local residential access with shared traffic, pedestrian and recreation use, but with pedestrian priority.

Access Road - An Access Road is a road that provides access to abutting properties with amenity, safety and aesthetic aspects having priority over the vehicle movement function. These roads are bicycle and pedestrian friendly. They are managed by local government.

Access Street - An access street is a street providing local residential access with shared traffic, pedestrian and recreation use with local traffic priority.

Access Way - An access way is a private road or local street serving very low traffic volumes, whose design need not be dominated by traffic considerations.

Aggregate - Aggregate is a material composed of discrete mineral particles of specified size or size distribution, produced from sand, gravel, rock or metallurgical slag, using one or more of the following processes: selective extraction, screening, blasting or crushing. Aggregate is used in the construction of sprayed seals and in concrete mixtures.

Airport - An airport is a location where aircraft such as Fixed-wing aircraft, helicopters, and blimps take off and land.

Annual Average Daily Traffic - Annual Average Daily Traffic (AADT) is the total volume of vehicle traffic of a highway or road for a year divided by 365 days. AADT is a useful and simple measurement of how busy the road is.

Arterial Road - An Arterial Road is a road that predominantly carries through traffic from one region to another, forming principal avenues of travel for traffic movements.

Asphalt - Asphalt is a composite material consisting of bituminous binder and mineral aggregate mixed together then laid down in layers and compacted.

Asphalt Overlay - An Asphalt Overlay is a course of asphalt applied to and existing road surface or other pavement.

Automated Car Convoy - An Automated Car Convoy is a string of computer controlled driverless cars slaved to the directions of the professional driver leading the group. The driverless cars maintain the correct speed and distance from the lead car.

Auxiliary Lane - An auxiliary lane is that portion of the carriageway adjoining through traffic lanes, used to separate either faster overtaking traffic or slower moving vehicles from through traffic, or for other purposes supplementary to through traffic movement.

Bicycle Lane - A bicycle lane is a narrow traffic lane set aside on a road for the use of cyclists.

Bicycle Path - A Bicycle Path (or Cycle Path) is a track, path, track or lane designated for use by cyclists from which motorised traffic is generally excluded.

Bikeway - A bikeway is a road, track, path or marked lane designated for use by cyclists from which motorised traffic is generally excluded.

Binder - A binder is a bituminous material used for waterproofing the surface of a road or similar pavement and holding an aggregate layer to it.

Bitumen - Bitumen is a very viscous liquid or a solid, consisting essentially of hydrocarbons and their derivatives, which are soluble in carbon disulphide. It is substantially non-volatile and softens gradually when heated. It possesses waterproofing and adhesive properties. It is obtained from native asphalt or by processing the residue from the refining of naturally occurring crude petroleum. Bitumen is used in the construction of Sprayed Seals.

Bitumen Seal - Bitumen Seal -> Sprayed Seal

Block Cracking - Block Cracking is a series of interconnecting cracks that form in a roughly rectangular pattern. It can occur in both concrete and flexible road pavements.

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