TYPES, MEANINGS, SADC-RTSM CONTEXT, AND APPLICATION GUIDANCE
Road signs are standardised traffic control devices used in South Africa to regulate, warn, and guide road users in accordance with the South African Road Traffic Signs Manual (SARTSM).
Road signage is about behaviour at the moment decisions are made.
It is not solved by signage alone, but poor signage quickly becomes a safety risk.
SCOPE OF THIS OVERVIEW
This page serves as a practical reference to the South African road signage system. It explains how road signs are classified, how different sign series are used, and how standards-based road signage supports safe, predictable traffic behaviour.
It does not replace road authority approvals, project specifications, or traffic engineering guidance for a specific site.
WHAT ARE ROAD SIGNS
Road signs are standardised traffic control devices used in South Africa to regulate road user behaviour, warn of hazards ahead, and provide direction and information to support safe and predictable road use.
Unlike general signage, road signs must work at distance, at speed, and under time pressure. That is why consistency of shape, colour, layout, and symbol meaning matters.
WHY ROAD SIGNS ARE IMPORTANT
Road signs support road safety and traffic efficiency by performing the following functions:
- creating predictable rules and right of way behaviour
- warning of hazards early enough for safe speed adjustment
- supporting lane choice, turning decisions, and route certainty
- reducing conflict at intersections, merges, and work zones
- improving compliance and enforcement clarity
ROAD SIGN STANDARDS IN SOUTH AFRICA
In South Africa, road signs for official road use must follow the relevant standards and guidance so they remain consistent, recognisable, and legally valid for their intended application.
Official road use requires standards alignment.
In South Africa, official road signs must comply with the South African Road Traffic Signs Manual (SARTSM), administered by the Department of Transport, and applicable South African National Standards (SANS) administered by the South African Bureau of Standards (SABS).
Road signs are typically grouped using a series system, which makes it easier to identify whether a sign is for control, command, prohibition, reservation, or warning.
TEMPORARY ROAD SIGNS, YELLOW BACKGROUND
Temporary road signs use a yellow background to signal that conditions are not normal. They are commonly used for road works, maintenance, construction zones, collisions, and temporary traffic control. Temporary road signs form part of the official road signage system and take precedence over permanent signs while temporary conditions apply.
WHEN TO USE TEMPORARY SIGNS
- roadworks and construction zones
- lane closures and temporary diversions
- collision scenes and emergency traffic control
- temporary speed control and temporary access arrangements
- temporary pedestrian or scholar control points
THE KEY MEANING
Yellow is the visual signal to slow down and pay attention, because the “normal” road condition is changing. Temporary signs must be placed early enough for drivers to react safely.
HOW ROAD SIGNS ARE GROUPED
Within the South African road signage system, road signs are grouped into series to standardise design, application, and interpretation across the national road network.
R SERIES
R Series signs are regulatory road signs used to control behaviour, define permitted actions, and restrict movement in accordance with traffic law.
W SERIES
W Series signs are warning road signs used to alert road users to hazards, changes in road layout, or conditions requiring increased caution.
TEMPORARY SIGNS
Temporary road signs are used where normal road conditions are altered for a limited period and are typically displayed on a yellow background.
ROAD SIGN SERIES DIRECTORY
Choose a series below to learn what it means, where it is used, and how to select the correct sign for your project. Then either go to the explained page or shop that series.
HOW TO CHOOSE THE RIGHT ROAD SIGN
Use this selection approach to reduce mistakes and rework:
- Identify the requirement, control, command, prohibition, reservation, warning, or information
- Choose the correct series, R or W, and temporary (yellow) where conditions are not normal
- Confirm the spec, authority requirements, project drawings, contract schedules, or site instruction
- Match visibility needs, distance, approach speed, night visibility, and placement location
- Select suitable construction, reflective sheeting, material, mounting method, and durability
PLACEMENT AND VISIBILITY CONSIDERATIONS
Road signs should be:
- visible early enough for safe reaction time
- positioned to match driver sight lines and approach direction
- kept unobstructed by vegetation, parked vehicles, or structures
- installed at appropriate height and lateral offset for the road environment
- maintained so reflectivity, legibility, and physical condition remain reliable
Temporary signs need stronger discipline.
Yellow temporary signs only work when they are consistent, correctly spaced, and removed when no longer applicable. Leaving temporary signs up after conditions return to normal erodes trust and reduces compliance.
READY TO SELECT ROAD SIGNS FOR YOUR PROJECT
Browse our full range of road signs, or start with the series directory above if you are still confirming the correct group. If you have a project schedule or authority spec, contact us and we will help you match it.