Speed Cameras on the A4
24
Total Cameras
4
Speed Limits
4
Counties
5
Cities
98,100
Peak AADT
178
Crashes (2023)
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Camera Types
Fixed: 24
Speed Limits
20 mph
2
30 mph
6
40 mph
6
50 mph
1
Unknown
9
All Cameras on the A4
| Type | Speed Limit | Road | Location | Daily Traffic | Crashes (500m) | |
|---|---|---|---|---|---|---|
| Fixed | — | A4 | Ealing | 98,100 | 8 | — |
| Fixed | 30 mph | A4 | Reading | 25,437 | 18 | — |
| Fixed | — | A4 | Reading | 21,477 | 4 | 90 |
| Fixed | — | A4 | Reading | 19,577 | 4 | 70 |
| Fixed | 30 mph | A4 | Reading | 21,477 | 4 | 355 |
| Fixed | 30 mph | A4 | Reading | 21,477 | 4 | 160 |
| Fixed | 30 mph | A4 | Bristol | 27,426 | 10 | — |
| Fixed | 30 mph | A4 | Bristol | 36,123 | 8 | — |
| Fixed | — | A4 | Bristol | 12,297 | 7 | — |
| Fixed | — | A4 | Bristol | 22,926 | 3 | — |
| Fixed | — | A4 | Bristol | 22,926 | 3 | — |
| Fixed | 50 mph | A4 | Bath | 22,255 | — | — |
| Fixed | 30 mph | A4 | Hounslow | 17,240 | 5 | — |
| Fixed | — | A4 | Hounslow | 38,689 | 4 | — |
| Fixed | 40 mph | A4 | Ealing | 44,178 | 25 | — |
| Fixed | 40 mph | A4 | Hounslow | 38,689 | 7 | — |
| Fixed | 40 mph | A4 | Hounslow | 38,689 | 8 | — |
| Fixed | — | A4 | Ealing | 98,100 | 8 | — |
| Fixed | 40 mph | A4 | Ealing | 49,343 | 6 | — |
| Fixed | — | A4 | Hounslow | 30,999 | 31 | — |
| Fixed | 20 mph | A4 | Reading | 19,577 | 3 | 220 |
| Fixed | 20 mph | A4 | Reading | 19,577 | 2 | 45 |
| Fixed | 40 mph | A4 | Reading | 41,532 | 3 | 100 |
| Fixed | 40 mph | A4 | Reading | 41,532 | 3 | 285 |
Road Safety on the A4
Collisions within 500m of speed cameras on the A4 (DfT STATS19, 2023).
1
Fatal
36
Serious
141
Slight
201
Casualties
Peak daily traffic on the A4: 98,100 vehicles/day (DfT AADF).
Counties Along the A4
Frequently Asked Questions
How many speed cameras are on the A4?
There are 24 speed cameras on the A4, including 24 fixed and 0 average speed cameras.
How many crashes occur near speed cameras on the A4?
In 2023, there were 178 collisions within 500m of speed camera locations on the A4, including 1 fatal and 36 serious. Source: DfT STATS19.
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.