Department of Planning,
Transport and Infrastructure

 Transport - Planning - Infrastructure
Government of SA - Department of Planning, Transport and Infrastructure

 Sign Index


About the Standard Road Sign Index



1 Scope

This index covers the road signs used in South Australia to control vehicular and pedestrian traffic on roads. It defines the sign classification, specifies the numbering system used and provides an illustrated index of all the standard signs used, including sign sizes.


Importantly, the index provides handy references to information regarding the use of the signs in the Australian Standards and where possible, a link to Department of Planning, Transport and Infrastructure (DPTI) Operational Instructions. It also provides a link to assist in the selection of the appropriate sign size.


2 Referenced Documents

It is important to understand that this document does not replace the Australian Standard, Manual of uniform traffic control devices - Part 1: General introduction and index of signs.


The following documents are referenced in this standard:


  • All parts of Australian Standard, Manual of uniform traffic control devices (AS 1742 parts 1-15).
  • Australian Standard, Road Signs - Specifications (AS1743).
  • Road Signs - Specifications, South Australia.
  • Australian Standard, Standard alphabets for road signs (AS1744).
  • DPTI Operational Instructions.
  • Code of Technical Requirements for the Legal use of Traffic Control Devices.

3 Definition of a Standard Road Sign

A traffic control device is any sign, signal, pavement message or other installation, placed or erected by a public authority or official body with the authorisation of the Minister for Transport, for the purpose of regulating, warning or guiding road users.

Standard road signs listed in this index are traffic control devices under this definition.


4 Authority for installation, alteration or removal

The Minister for Transport has granted general approval to the Commissioner of Highways, Councils and some other authorities to use traffic control devices under conditions stated in notices and contained in the Code of Technical Requirements for the Legal use of Traffic Control Devices (the "Code"). The Commissioner has authorised the Manager, Traffic and Access Standards Section (TASS) and Regional Managers to exercise certain powers of approval. To understand these powers it is important that all officers arranging for the installation, alteration or removal of road signs be familiar with the "Code" and act accordingly.

The "Code" and the Operational Instruction 18.3, Traffic Control Device Approval and Authorisation are available on the TASS home page.


5 Non-standard signs

Non-standard signs are not to be used without the authorisation of the Manager, Traffic and Access Standards Section. For further information regarding non-standard signs contact dpti.tassadminsupport@sa.gov.au 


6 Numbering of signs and sign components

Two coding systems are used in this index of standard road signs. The first is for identifying individual signs and the second for identifying individual symbols used as components within signs.


6.1 Signs


The alphanumeric coding system for signs is as follows:


(a) A letter prefix, as shown below, to denote the class of sign:


     R - Regulatory signs
     W - Warning signs
     G - Guide signs
     GE - Freeway signs
     T - Temporary signs
     D - Hazard markers


Note: Specific direction signs in the G and GE series are not available as standard signs. These signs will be determined separately for DPTI by the TASS.


(b) A number denoting the series, or group of signs.


(c) A second number, sometimes alphanumeric and sometimes with a third number identifying the sign in the series or group.


(d) A letter denoting the size of the sign, e.g. S, A, B, etc, where S, or if not available A, is the smallest.


(e) The letters (L), (R) or (T) where the sign has a directional component left, right or through.


Example: R2-6A(R), denotes a regulatory sign in the direction series, R2. The sign is sixth in the series, is the smallest available and has directional significance.


(f) Where distances are shown on signs, the distance shall be indicated as follows: for distances up to 500m - in 50m increments, for distances between 500m and 1km - in 100m increments, and for distances greater than 1km - to the nearest km.


6.2 Symbols


Symbols used as a component of a standard road sign are identified by the letter prefix S, TS, WS or IS followed immediately by a number which indicates the particular symbol.


7 Sign size

As described in 6 (d) above, different sign sizes may be available. A link to a sign size guide can be accessed from the references column in the index.


8 Lettering, colour and general design

Lettering, colours and designs of standard signs are specified in the individual sign specification drawings in Australian Standard, Road Signs - Specifications (AS1743) and in Road Signs - Specifications, South Australia. These specifications must not be altered without the approval of the Manager, TASS.


The level of retro-reflectivity has been specified in the DPTI sign supply and manufacture specification and must not be altered without the approval of the Manager, TASS.