Traffic Merges Onto Main Carriageway Sign Face Post Mounted 509.1 (Face Only)

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Traffic Merges Onto Main Carriageway 509.1 Sign

This diagram is used to warn drivers that they are about to join the main carriageway and may have to give way to oncoming traffic.

The sign is needed where it is not obvious to drivers that they are on a slip road- such as a former main road through a village joining a bypass, or the main carriageway of a motorway joining another motorway. For more details on where this sign can be used, refer to page 12 of the TSRGD Guidelines, Chapter 4.

If it is difficult to see where the traffic will merge from the position of the sign, it can be plated with the distance ahead in yards or miles. The same diagram, but rotated, is used for the carriageway it is joining. 508.1 should be used to warn of traffic joining from the left hand side.

This sign comes standard at the size of 600mm, but other sizes are available from the options box. Please contact our sales team to arrange alternative sizing where space is limited or collisions are recurrent.

traffic merges onto main carriageway

Superior Quality Sign Face

Superior quality speed bump sign

Superior quality prismatic reflective sign face ensure that the sign stands the test of time.

Durable Composite Base

Classic roll up sign hinge

Made from a composite material which is an aluminium covering over plastic, it is light and ultra strong.

Designed to be Post Mounted

Protected reflective face

Each Part of the sign comes with two rails allowing the fitment of two clips per face for secure mounting.


Conforms Class 2 Reflectivity
Diagram Reference 509.1
AccuChecked ✔ (The specification has been independently checked for accuracy)
AccuPhoto ✔ (The photos are of the actual product type that you are ordering)
Thickness 3.6mm (face), 20mm (including rails)
Type R2/RA2 reflective material on composite backing
Colour Grey backing, white, red and black signage
Customisation Alternative wording and sizes available. Please call for details.

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