Speed Cameras on the A4

Total Cameras

Speed Limits

Counties

Cities

98,100

Peak AADT

178

Crashes (2023)

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Camera Types

Fixed: 24

20 mph

30 mph

40 mph

50 mph

Unknown

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
Fixed	—	A4	Reading	19,577	4
Fixed	30 mph	A4	Reading	21,477	4
Fixed	30 mph	A4	Reading	21,477	4
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
Fixed	20 mph	A4	Reading	19,577	2
Fixed	40 mph	A4	Reading	41,532	3
Fixed	40 mph	A4	Reading	41,532	3

Collisions within 500m of speed cameras on the A4 (DfT STATS19, 2023).

Fatal

Serious

141

Slight

201

Casualties

Peak daily traffic on the A4: 98,100 vehicles/day (DfT AADF).

There are 24 speed cameras on the A4, including 24 fixed and 0 average speed cameras.

In 2023, there were 178 collisions within 500m of speed camera locations on the A4, including 1 fatal and 36 serious. Source: DfT STATS19.

The busiest section of the A4 near a speed camera carries approximately 98,100 vehicles per day. Source: DfT Road Traffic Statistics.