Road camera directory
Speed Cameras on the A4
24
Total Cameras
4
Speed Limits
4
Counties
5
Cities
98,100
Peak AADT
165
Collisions (2024)
Interactive camera map
The map loads when it enters view.
Camera Types
Speed Limits
All Cameras on the A4
Camera directory loaded with 24 records.
| Type | Speed Limit | Road | Location | Daily Traffic | Crashes (500m) |
|---|---|---|---|---|---|
| Fixed | — | A4 | Ealing | 98,100 | 9 |
| Fixed | 30 mph | A4 | Reading | 25,437 | 17 |
| Fixed | — | A4 | Reading | 21,477 | 2 |
| Fixed | — | A4 | Reading | 19,577 | 8 |
| Fixed | 30 mph | A4 | Reading | 21,477 | 1 |
| Fixed | 30 mph | A4 | Reading | 21,477 | 2 |
| Fixed | 30 mph | A4 | Bristol | 27,426 | 2 |
| Fixed | 30 mph | A4 | Bristol | 36,123 | 6 |
| Fixed | — | A4 | Bristol | 12,297 | 6 |
| Fixed | — | A4 | Bristol | 22,926 | 7 |
| Fixed | — | A4 | Bristol | 22,926 | 7 |
| Fixed | 50 mph | A4 | Bath | 22,255 | — |
| Fixed | 30 mph | A4 | Hounslow | 17,240 | 9 |
| Fixed | — | A4 | Hounslow | 38,689 | 8 |
| Fixed | 40 mph | A4 | Ealing | 44,178 | 37 |
| Fixed | 40 mph | A4 | Hounslow | 38,689 | 9 |
| Fixed | 40 mph | A4 | Hounslow | 38,689 | 12 |
| Fixed | — | A4 | Ealing | 98,100 | 10 |
| Fixed | 40 mph | A4 | Ealing | 49,343 | 10 |
| Fixed | — | A4 | Hounslow | 30,999 | 28 |
| Fixed | 20 mph | A4 | Reading | 19,577 | 6 |
| Fixed | 20 mph | A4 | Reading | 19,577 | 3 |
| Fixed | 40 mph | A4 | Reading | 41,532 | 6 |
| Fixed | 40 mph | A4 | Reading | 41,532 | 6 |
Road Safety on the A4
Unique collisions within 500m of mapped speed cameras on the A4 (DfT STATS19, 2024).
Collision context
Severity near mapped cameras
0
Fatal · 0%
22
Serious · 13%
143
Slight · 87%
165
unique collisions within 500m
198
casualties · 1.2 per collision
What the figures say
13% of matched collisions were fatal or serious in the 2024 STATS19 dataset.
98,100 vehicles per day at the busiest matched count point across 24 matched count locations.
These are collisions near mapped camera records, not collisions caused or prevented by cameras. Coverage depends on available camera, traffic and STATS19 coordinates.
A4 · DfT STATS19 2024 and Road Traffic Statistics AADF 2024.
Counties Along the A4
Frequently Asked Questions
How many speed cameras are on the A4?
This directory currently maps 24 speed cameras on the A4, including 24 fixed and 0 average-speed records.
How many crashes occur near speed cameras on the A4?
In 2024, DfT STATS19 recorded 165 unique collisions within 500m of mapped camera locations on the A4, including 0 fatal and 22 serious collisions.
How busy is the A4?
The busiest section of the A4 near a speed camera carries approximately 98,100 vehicles per day. Source: DfT Road Traffic Statistics.