Keep Left / Right - Class RA1 - Safety Signs by Caledonia Signs

A Keep Left / Keep Right sign is used to direct traffic safely around an obstruction or hazard on the road, such as roadworks, a central reservation, or a temporary barrier. The purpose of the sign is to clearly instruct drivers which side they must pass on to avoid danger. It helps maintain safe and efficient traffic flow, particularly in areas where the usual road layout is altered or partially blocked.

These signs are commonly placed at roadworks, around temporary traffic islands, or where lanes are closed due to maintenance or construction activities. On dual carriageways or busy urban roads, they are essential for guiding vehicles around works areas without confusion. The direction indicated (left or right) depends on the safest route available around the obstruction.

The signs are also used on temporary barriers, cones, or freestanding bases to make them highly visible to oncoming drivers. They are especially useful in situations where a lane tapers off or merges, and traffic must be directed clearly to avoid sharp maneuvers. Their distinctive blue circular design with a white arrow provides a quick and universally understood instruction to drivers.

In practice, a Keep Left or Keep Right sign is deployed as part of a wider temporary traffic management plan. It works alongside warning signs like “Road Works Ahead” or “Lane Closed” to guide road users through altered layouts safely. By providing clear, simple instructions, these signs help reduce driver hesitation and prevent accidents near temporary hazards or changes in road configuration.

Materials Explained

Any product outside of our standard choice of material/size range starts with a 5. This may include items such as rolls of tape, sign frames, floor graphics or banners. Below you can find a more detailed description of the miscellaneous material options available for this sign design.

Class RA1: Manufactured from 3mm aluminium composite with an engineering grade retroreflective sheeting to ensure visibility during day and night. This reflective layer helps headlights bounce light back to drivers, making the sign readable in low-light conditions and offers approximately a 7 years lifespan. Aluminium composite is a lightweight, durable material which holds no scrappage value - reducing the potential for theft. It is weather and rust resistant - overall, RA1 signs are designed to be durable, weatherproof, and highly visible to ensure the safety of road users around temporary worksites.