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.


Guardrail - A Guardrail is a fence or similar structure designed to prevent vehicles from veering off the roadway into oncoming traffic, crashing against solid objects or falling over an embankment. A secondary objective is keeping the vehicle upright while deflected along the guardrail.

Guidepost - A guidepost is a white timber or plastic post fitted with delineators that is used to mark and delineate roadside hazards, road widths, alignments and structures. They should be installed at a uniform distance from the edge of the road.

Highway - A highway is a main road declared a highway by the State or Federal Government and typically used for travel by the public between important destinations, such as cities, large towns, and states.

Industrial Collector Road - An industrial collector road is a road that acts as a feeder or connecting road, linking industrial areas within the arterial or distributor road system. Industrial collectors will provide direct frontage to industrial lots and access to industrial access roads.

International Roughness Index - The International Roughness Index (IRI) is a worldwide standard for measuring road smoothness longitudinally (i.e. in direction of driving). The index measures pavement roughness in wheel path in terms of the number of metres per kilometre that a laser, mounted in a specialised van, jumps as it is driven along a road. The lower the IRI number at given speed, the smoother the ride felt by road user.

Invert Crossing - An invert crossing is a section of kerb & channel adjacent to a driveway or pathway, with a flatter than normal profile to allow vehicles or pedestrians to easily cross the kerb.

Kerb & Channel Machine - A Kerb & Channel Machine is a mechanical device used to lay kerb & channel.

Kerb Crossing - A kerb crossing is a modified section of kerb & channel or a structure adjacent to a driveway designed to allow vehicles to cross from the road to the the driveway.

Kerb Marker - A kerb marker is a plate or marker affixed to or embedded into a kerb or symbol painted on it, indicating the presence of an underground service crossing or in the road adjacent to that point.

Lane Closure - A lane closure us the temporary closure of one or more traffic lanes. Traffic control devices are in place to enable traffic to use unaffected lanes.

Laneway - A laneway is a narrow street or alley located at the rear of urban buildings, especially houses or commercial premises.

Level Crossing - A level crossing is an area where a road and a railway meet at substantially the same level, whether or not there is a level crossing sign on the road at all or any of the entrances to the area; or an area where a road and tram tracks meet at substantially the same level and that has a level crossing sign on the road at each entrance to the area.

Link Road - A Link Road is a road that supplements the main arterial road network. A link road provides through traffic movement between urban areas, and other places, such as shopping precincts, major sporting venues, industrial areas, agricultural areas and major tourist attractions.

Loading Zone - A loading zone is a clearly signed area set aside for short-term use by certain vehicles when loading or unloading goods in the course of business or when dropping off or picking up passengers. Extended parking while loading zones are in operation is not permitted.

Local Area Traffic Management - Local Area Traffic Management (LATM) is the use of physical devices, streetscaping treatments and other measures (including regulations and other non-physical measures) to influence vehicle operation, in order to create safer and more liveable local street.

Local Road - A local road is a road or street primarily used for access to abutting properties.

Local Street - A local street is a street whose main function is to provide access to and from adjacent land uses.

Local Traffic Area Management - Local area traffic management is the process of planning and controlling the usage of streets within a local residential area to achieve goals, determined by affected parties, for the improvement of the residential environment.

Longitudinal Cracking - Longitudinal cracking is cracking that runs along the length of a pipe or road.


Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License