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DOT 509.1 Traffic Joins main carriageway sign

Description and Specification

Model Code:
Variant:
Size:
Material:
£ Excl. VAT
£ Inc. VAT
made in britain logo
Bulk pricing for selection options
1+
0.00
Bulk prices shown EXCLUDE VAT and any chosen options and are for base product only. Please see table below options for overall bulk pricing.
DOT 509.1 450mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 22.97
(inc VAT 27.56)
DOT 509.1 450mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 28.72
(inc VAT 34.46)
DOT 508.1 600mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 31.28
(inc VAT 37.54)
DOT 509.1 600mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 37.86
(inc VAT 45.43)
DOT 509.1 750mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 43.62
(inc VAT 52.34)
DOT 509.1 750mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 51.42
(inc VAT 61.70)
DOT 509.1 900mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 64.85
(inc VAT 77.82)
DOT 509.1 900mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 78.20
(inc VAT 93.84)
DOT 509.1 1200mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 111.91
(inc VAT 134.29)
DOT 509.1 1200mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 130.50
(inc VAT 156.60)
DOT 509.1 1500mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 210.02
(inc VAT 252.02)
DOT 509.1 1500mm triangle RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 216.02
(inc VAT 259.22)
Code Size Material 1+
XS - Bulk prices shown EXCLUDE any chosen options and are for base product only. Please see table below options for overall bulk pricing.
450mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
22.97
(inc VAT 27.56)
450mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
28.72
(inc VAT 34.46)
600mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
31.28
(inc VAT 37.54)
600mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
37.86
(inc VAT 45.43)
750mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
43.62
(inc VAT 52.34)
750mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
51.42
(inc VAT 61.70)
900mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
64.85
(inc VAT 77.82)
900mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
78.20
(inc VAT 93.84)
1200mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
111.91
(inc VAT 134.29)
1200mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
130.50
(inc VAT 156.60)
1500mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)
210.02
(inc VAT 252.02)
1500mm triangle
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)
216.02
(inc VAT 259.22)
Size / Material 1+

The DOT 509.1 Traffic Joins Main Carriageway warning sign is used to alert drivers that traffic from a slip road or side junction will be merging with the main flow of vehicles ahead. This sign is essential for enhancing road safety by preparing motorists to anticipate merging vehicles, allowing them to adjust their speed and position accordingly.

This triangular sign features a red border with a clear, bold graphic showing a joining lane, making it easy to interpret even at a distance or high speed. It is commonly positioned in advance of motorway and dual carriageway slip roads or other joining points where the risk of side-impact collisions increases without proper warning.

Manufactured from durable, road-grade materials and finished with reflective surfaces, the DOT 509.1 sign offers excellent visibility in all weather and lighting conditions. It meets all UK highway regulations and is suitable for both permanent installations and temporary traffic management scenarios.

This sign is particularly useful on high-speed roads where vehicles joining from slip roads may be travelling at lower speeds, helping main carriageway drivers remain alert and reduce the risk of sudden braking or swerving. The DOT 509.1 sign is a critical addition to any road layout involving merging traffic and is part of the official set of UK traffic signs designed to maintain safe and efficient road use.

Materials available for this product

RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)

RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted)

Description:
RA2 (Class 2 High Intensity) 3mm Dibond Traffic Grade with rail (Post Mounted) 12 year warranty c/w Anti-Graffiti Laminate. CE Marked Permanent Road Signs conform to the Traffic Signs Regulations and General Directions 2002 and BS EN 12899-1:2001.
Thickness:
3mm
Fixing Options:
To be fixed with clips or Universal Screw Banding and Channel Clamps
Compliance:
Road Legal (CE Marked)
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)

RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted)

Description:
RA2 Reflective (Class 2 High Intensity) 3mm Dibond Traffic Grade Plate (Wall Mounted) 12 year warranty c/w Anti-Graffiti Laminate. CE Marked Permanent Road Signs conform to the Traffic Signs Regulations and General Directions 2002 and BS EN 12899-1:2001.
Thickness:
3mm
Fixing Options:
Can be drilled and screwed to flat surface
Compliance:
Road Legal (CE Marked)

*indicates your currently selected material