Road Traffic Hazard Sign is a Grade II listed building in the Hillingdon local planning authority area, England. First listed on 25 July 2012. Sign.

Road Traffic Hazard Sign

WRENN ID
forbidden-vestry-hawthorn
Grade
II
Local Planning Authority
Hillingdon
Constituency
Hayes and Harlington MP: John McDonnell (Lab)
Country
England
Date first listed
25 July 2012
Type
Sign
OS grid reference
TQ 086 776
Coordinates
51.48732, -0.43587
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The road traffic hazard sign is a Grade II listed structure, featuring a red-painted metal hollow equilateral triangle mounted on an ornate white-painted cast-iron post that stands 9 feet (2.7 meters) tall. The post has an octagonal shape on a square base and is topped with a flat, flared mount for the sign. Below this mount, there are moulded decorative bands, which are separated by a row of large octagonal bolts that secure the mount and create the appearance of a capital. Near the bottom of the post, between two additional moulded bands, are the letters CCM, which stand for the County Council of Middlesex, repeated on each side of the post and separated by floral studs. At the base of the post, there is an oval maker's plate that reads 'PARSONS / MAKERS / BRIERLEY HILL'.

Local climate

Road Traffic Hazard Sign sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 91% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 86% of listed buildings.

It experiences an average of 29 freeze-thaw cycles a year, fewer than 67% of listed buildings. Of these, 12 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • No EPC on record for this property
  • No sale records on file
  • No related consent applications matched
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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