R100 Series - Command Road Signs Explained

Purpose of R100 command signs
R100 Series signs instruct road users to perform a specific mandatory action in order to proceed safely.

How they control traffic
These signs remove choice by clearly directing movement, such as turning left, turning right, or proceeding straight only.

Where they are used
R100 command signs are used at intersections, channelised lanes, traffic islands, and controlled access points where driver behaviour must be clearly defined.

Visual identification
They are circular signs with a blue background and white symbols, making them instantly recognisable as mandatory instructions.

Applicable standard
R100 Series command signs are defined in the Southern African Development Community Road Traffic Signs Manual (SADC-RTSM) and are used throughout South Africa.

Best next step
Browse the R100 Series below, then select the correct command sign for your road layout or traffic control requirement.

WHAT ARE R100 SERIES COMMAND ROAD SIGNS

R100 Series command road signs are regulatory signs used to instruct road users on actions that must be followed. Their purpose is to direct traffic movement, lane usage, and driving behaviour in a clear and enforceable way.

These signs form part of the standard road signage system defined in the Southern African Development Community Road Traffic Signs Manual (SADC-RTSM) and are used on public roads, private roads, construction sites, and controlled access areas throughout South Africa.

WHEN R100 COMMAND SIGNS ARE USED

R100 Series command signs are used wherever specific driving actions are required to maintain traffic flow, safety, or operational control.

  • Where traffic must proceed in a specific direction
  • At intersections requiring controlled turning movements
  • Where lane discipline must be enforced
  • In areas with restricted manoeuvring space
  • On private or industrial roads where traffic rules must be clearly communicated

Command signs regulate behaviour directly and must be obeyed. They do not provide guidance or warnings, they instruct mandatory actions.

COMMON ENVIRONMENTS

  • Urban and suburban road networks
  • Industrial and logistics facilities
  • Construction and maintenance zones
  • Residential estates and access-controlled areas
  • Commercial developments and parking facilities
  • Transport hubs and service roads
Mandatory action

R100 command signs must be placed where drivers can clearly see and understand the required action before committing to a manoeuvre.

COLOUR, SHAPE, AND SYMBOL MEANING

  • Blue circular backgrounds, indicate mandatory instructions
  • White arrows or symbols, show the required direction or action
  • Circular shape, distinguishes command signs from warning and prohibition signs

This colour and shape combination is prescribed by the SADC-RTSM to ensure instant recognition and consistent interpretation.

COMMON TYPES OF R100 SERIES COMMAND SIGNS

  • Turn left only
  • Turn right only
  • Proceed straight only
  • Pass this side
  • Directional arrows for controlled movement

The specific sign used depends on road layout, traffic flow requirements, and site conditions. The full range includes variations for different applications.

Ready to buy, browse the full range of R100 Series Command Road Signs.

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MATERIALS AND FORMATS

R100 Series command road signs supplied on our website are manufactured for outdoor durability and long-term visibility.

  • Reflective sign faces, suitable for day and night visibility
  • Rigid substrates, designed to withstand weather and roadside exposure

All road signs listed are produced to meet standard road signage requirements. Alternative materials or formats can be supplied on request.

WHICH MATERIAL SHOULD I CHOOSE?

Standard road sign material
  • Suitable for permanent outdoor installation
  • Designed for roadside and traffic environments
  • Appropriate for public and private roads
Project-specific formats
  • Temporary or controlled environments
  • Construction and operational sites
  • Custom mounting or size requirements

If you are unsure which format is most appropriate, our team can assist.

STANDARD SIZES AVAILABLE

R100 Series command signs are supplied in standard sizes aligned with SADC-RTSM guidance.

Size selection depends on:

  • Approach speed
  • Viewing distance
  • Road classification
  • Mounting height and lateral clearance

If a specific size is required for your application, contact us for assistance.

HOW TO CHOOSE THE RIGHT R100 COMMAND SIGN

  • Identify the required driving action
  • Assess traffic speed and road geometry
  • Ensure the sign is visible before the decision point
  • Select an appropriate size for the viewing distance
  • Confirm placement aligns with site or authority requirements
  • Maintain consistency with surrounding road signage

RELATED SIGN CATEGORIES

VIEW R100 SERIES COMMAND ROAD SIGNS

Browse our full range of R100 Series command road signs manufactured for visibility, durability, and compliance.

View R100 Command Road Signs