A strip of road, not normally intended for use by traffic, which separates carriageways for traffic travelling in opposite directions. Median Shoulders are NOT considered part of the Median.

This area may consist of a shoulder, a recoverable slope, a non-recoverable slope and a run out area, but all parts can be traversed. The desirable width is dependent on traffic volumes, speeds and the geometry of the road.(Definition taken from AS/NZS 3845-1999

The following glossary is an alphabetical list of some of the terms commonly used in road design and construction by Main Roads Western Australia. This glossary is provided to assist understanding of the guidance provided in the Standards website. Generally it only lists terms that are not covered by the Australian Standard (AS1348-2002), or those terms where the interpretation or common use practice of Main Roads Western Australia may differ from that of the Australian Standards. If the reader requires more precise information, refer to the Road Traffic Code 2000 or AS1348.

Means a road declared to be a highway, main road or secondary road under the Main Roads Act 1930, and includes parts of any such road.

The Government of Western Australia acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders both past and present.

In relation to any road means that a section or part of that road is intended for use by prescribed traffic without avoidable hindrance, whether from traffic from an intersecting road or otherwise, and that such section or part of the road has been declared by proclamation to be subject to control of access and may be entered or departed from at specified places only.

DISCLAIMER: Our signs are not intended for outdoor placement. Artwork may fade, blister, or peel over time if hung outside in the elements.

Means a road declared by proclamation to be a highway for the purposes of the Main Roads Act 1930, and includes any part thereof.

A section of carriageway constructed in a location to enable the future construction of infrastructure in its permanent location.

The horizontal width of space available for the safe use of an errant vehicle, which consists of the verge area and is measured from the nearside edge of the traffic lane. In the case of a divided road, it is also measured from the off-side edge of the traffic lane to the edge of the pavement for opposing traffic.

Is a high standard Shared Path primarily provided for regional commuter bicycle trips, though it serves many local destinations along the way. It offers a high level of safety due to its high standards and separation from motor traffic.