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Proceed Left Only Road Sign – R105

The Proceed Left Only road sign, designated R105, is a mandatory regulatory traffic sign used to instruct drivers that they must proceed only in the direction indicated by the left-pointing arrow.

The R105 sign is part of the South African regulatory road-sign system. When the sign applies, drivers are required to follow the indicated leftward direction rather than proceeding straight ahead or in another direction.

What Does the R105 Sign Mean?

R105 means PROCEED LEFT ONLY. The sign gives drivers a mandatory direction of travel and requires the vehicle to proceed in the direction indicated by the arrow.

It is important to distinguish R105 from a general Turn Left instruction. R105 is a regulatory command and is used where traffic movement is restricted to the direction shown on the sign.

Where Is the R105 Sign Used?

R105 can be used at locations where vehicles are required to proceed only to the left. Applications can include:

• One-way roadways
• T-junctions
• Roadway entrances and exits
• Traffic-management points
• Temporary road closures
• Roadworks and construction areas
• Temporary traffic diversions
• Locations where straight-ahead movement is restricted

The exact application depends on the road layout and the traffic-control arrangement at the location.

R105 at T-Junctions and One-Way Roadways

The South African Road Traffic Signs Manual specifies that R105 and R106 should be displayed on the far side of a one-way roadway where traffic is entering the one-way roadway from the stem of a T-junction or from an exit from a site generating significant volumes of traffic.

The sign should be positioned so that vehicles obeying the instruction turn in front of the sign.

R105 at Roadworks

A temporary version of the sign, designated TR105, can be used at temporary roadworks and other temporary traffic-control situations.

TR105 may be particularly useful where a temporary road closure or obstruction means that vehicles can only proceed to the left. The temporary sign provides the same basic mandatory directional instruction as R105 while using the temporary traffic-sign colour arrangement.

Other temporary traffic-control devices, including barricades, warning signs, cones and road markings, may also be required depending on the roadwork layout.

R105 and Temporary Road Closures

Where a road or lane is temporarily closed and traffic is required to move to the left, TR105 can be used to communicate the required direction.

The SARTSM specifically states that TR105 and TR106 may commonly be used at roadwork sites where a temporary road closure is required and movement is permitted only to the left or right, as applicable.

TR105 and TR106 should not be mounted together where traffic is permitted to move both left and right into a two-way cross road. The SARTSM specifies that an appropriate T-junction chevron hazard marker, W409, should be used in that situation.

R105 Sign Placement

R105 and R106 should be located so that traffic following the instruction turns in front of the sign. The sign should be positioned clearly in relation to the roadway and the direction of permitted travel.

Proper placement is important because drivers need to understand the mandatory direction before reaching the point where the movement is required.

R105 Sign Design and Appearance

The permanent R105 is a circular regulatory sign with a blue retroreflective background and a white retroreflective arrow and border.

The temporary TR105 uses a yellow retroreflective background and outer border with a black semi-matt arrow and inner border, in accordance with the temporary sign colour arrangement.

R105 vs R103 Keep Left

R105 and R103 can appear similar because both can direct vehicles towards the left, but they serve different purposes.

• R103 – Keep Left: requires vehicles to pass an obstruction on the left-hand side.
• R105 – Proceed Left Only: requires vehicles to proceed only in the direction indicated by the left arrow.

Selecting the correct sign depends on whether the traffic-control requirement concerns passing an obstruction or restricting vehicle movement to a particular direction.

R105 vs Turn Left

“Turn Left” is commonly used as a general description, but the official South African regulatory designation for R105 is PROCEED LEFT ONLY.

For an official road-sign product page, using the wording Proceed Left Only – R105 is therefore more accurate than simply calling the sign “Turn Left.”

R105 Sign Size

The required size of R105 depends on the applicable road environment and the sign-size requirements for that location. The SARTSM provides dimensions for R105 and related command signs in its regulatory-sign specifications.

The correct sign size should therefore be selected according to the intended installation rather than using one universal size for every application.

R105 Signs on Private Property

Directional traffic-control signage can also be useful within controlled environments such as shopping centres, parking facilities, commercial properties, industrial sites and private developments.

Where an official regulatory road sign is used on private property, the property owner or site manager should consider the site's traffic-management requirements and any applicable property or authority requirements.

Benefits of Clearly Displayed R105 Signs

• Provides a clear mandatory direction of travel.
• Helps prevent vehicles from proceeding in an unauthorised direction.
• Can support organised traffic movement at T-junctions and one-way roadways.
• Can be used as part of temporary traffic control at roadworks.
• Helps communicate temporary changes to vehicle movement.
• Can form part of a wider traffic-management system.

Proceed Left Only R105 Sign FAQs

What does the R105 road sign mean?

R105 means PROCEED LEFT ONLY. It requires the driver to proceed only in the direction indicated by the arrow.

Is R105 the correct code for Turn Left?

R105 is the correct code for the South African regulatory sign officially described as PROCEED LEFT ONLY. “Turn Left” can be used as a customer-friendly description, but “Proceed Left Only” is the official terminology.

What is the difference between R103 and R105?

R103 means Keep Left and requires traffic to pass an obstruction on the left. R105 means Proceed Left Only and restricts the direction in which traffic may proceed.

What is the temporary version of R105?

The temporary version is TR105, which can be used at temporary roadworks and other temporary traffic-control situations.

Can R105 be used at roadworks?

Yes. TR105 can be used where temporary roadworks or a road closure requires traffic to proceed to the left.

Where should R105 be positioned?

R105 should be positioned so that vehicles following the instruction turn in front of the sign.

Can R105 be used on private property?

Directional signage can be used as part of traffic management on private property, subject to the site's requirements and any applicable regulations or authority requirements.

Get R105 Proceed Left Only Road Signs from Signs4SA

Signs4SA can assist with R105 Proceed Left Only road signs and temporary TR105 signage for roads, T-junctions, roadworks, commercial properties, parking areas, industrial sites and other controlled traffic environments.

Contact Signs4SA to discuss your Proceed Left Only signage requirements, provide your specifications and request a quotation.

Turn Left signs come in a variety of styles and formats, including danger signs, warning signs, and caution signs. Danger signs are used to indicate an immediate threat that could cause serious injury or death, such as high voltage areas or hazardous materials. Warning signs are used to indicate potential hazards that could cause injury, such as slippery floors or falling objects. Caution signs are used to indicate potential hazards that could cause minor injury, such as low ceilings or uneven surfaces. Another type of safety sign is the Turn Left sign, which is used to provide guidance on safe behavior. These signs can include instructions on how to use equipment or machinery safely, as well as reminders to wear personal protective equipment (PPE) or follow specific safety protocols. Turn Left signs can also be used to ensure compliance with safety regulations. For example, fire safety signs are required by law in most public buildings and workplaces. These signs indicate the location of fire exits, fire extinguishers, and other fire safety equipment.

More About Turn Left

Safety signs are an essential part of any workplace or public space. They are used to warn people of potential hazards, provide guidance on safe behavior, and ensure compliance with safety regulations. One type of safety sign is the Turn Left sign, which is designed to alert people to potential dangers in a particular area. Turn Left signs come in a variety of styles and formats, including danger signs, warning signs, and caution signs. Danger signs are used to indicate an immediate threat that could cause serious injury or death, such as high voltage areas or hazardous materials. Warning signs are used to indicate potential hazards that could cause injury, such as slippery floors or falling objects. Caution signs are used to indicate potential hazards that could cause minor injury, such as low ceilings or uneven surfaces. Another type of safety sign is the Turn Left sign, which is used to provide guidance on safe behavior. These signs can include instructions on how to use equipment or machinery safely, as well as reminders to wear personal protective equipment (PPE) or follow specific safety protocols. Turn Left signs can also be used to ensure compliance with safety regulations. For example, fire safety signs are required by law in most public buildings and workplaces. These signs indicate the location of fire exits, fire extinguishers, and other fire safety equipment. In addition to these types of safety signs, there are also specialized signs available for specific industries or hazards. For example, construction sites may use signs to indicate the location of underground utilities or to warn of falling debris. Healthcare facilities may use signs to remind employees to wash their hands or to indicate the location of first aid supplies. When selecting safety signs, it is important to choose signs that are appropriate for the specific hazard or situation. Signs should be placed in prominent locations where they are easily visible, and should be made from durable materials that can withstand harsh environmental conditions. By using safety signs effectively, businesses and organizations can help protect their employees, customers, and visitors from harm.

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