1Scope and introduction#

1.1Scope#

This Guide sets out guidelines for the design and erection of roadside signs.

This Guide does not cover cantilevers and gantries that overhang the carriageway.

1.2Application#

This Guide is applicable to all types of roads under normal operating conditions.

1.3Objective#

The objective of this Guide is to provide a set of uniform guidelines for the design and erection of roadside signs throughout Queensland.

1.4Introduction#

The procedure for the design of signs in this Guide should be applied from the initial design of the sign face through to the ordering of each sign component. The software program TraSiS guides the user through the design process. Appendix A provides details on the program together with information on how to purchase a copy.

1.5Referenced documents#

Australian Standard AS/NZS 1170.2 2011 Structural Design Actions, Part 2: Wind Loads is referenced in this Guide, as are the Transport and Main Roads Specifications Manual and the Standard Drawings Manual.

1.6Definitions#

For the purpose of this Guide, the following definitions apply.

Built-up area

A road in a built-up area is defined as any road upon which there is a system of street lighting.

Clear zone

The total roadside border area, starting at the edge of the travelled way, available for safe use by errant vehicles and for the display of official traffic signs. This area may consist of a shoulder, a recoverable slope, a non-recoverable slope and/or a clear run-out area. The minimum clear zone width is dependent upon speed environment, AADT and roadside geometry.

Shall

The word shall is to be understood as mandatory.

Should

The word should is to be understood as a recommendation.

Sign ground clearance

The minimum distance in metres between the lower edge of a sign and the ground level directly below the lower edge of the sign.

Sign height

The height in metres between the lower edge of a sign at the edge closest to the travelled way and the level of the nearest edge of the travelled way, generally the edge line. The edge line is used as the reference point for determining the clear zone.

Speed limit

The maximum speed at which a motor vehicle is legally permitted to travel on a particular section of road.