A4020 Speed Cameras
3 mapped camera locations on the A4020 from Southall to Ealing. The most common limit is 20 mph.
- Cameras
- 3
- Most common limit
- 20 mph
- Collisions near cameras
- 53
- Busiest point, vehicles/day
- 13,398
Interactive camera map
The map loads when it scrolls into view.
Cameras along the A4020
Southall → Ealing · 3 camera sites, heading east
- Start · Southall
- End · Ealing · about 7 miles of camera coverage
Order and mileage are approximate (straight-line between camera sites). Directions show the direction of traffic the camera is mapped for.
Speed limits at A4020 cameras
Camera types
Fixed
Gatso, Truvelo and similar cameras at one spot
3
100%
Road safety on the A4020
Unique collisions within 500 m of mapped camera locations on the A4020 (DfT STATS19, 2024). Proximity does not establish causation.
Collision context
Severity near mapped cameras
0
Fatal · 0%
7
Serious · 13%
46
Slight · 87%
53
unique collisions within 500m
55
casualties · 1.0 per collision
What the figures say
13% of matched collisions were fatal or serious in the 2024 STATS19 dataset.
13,398 vehicles per day at the busiest camera across 1 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.
the A4020 · DfT STATS19 2024 and Road Traffic Statistics AADF 2024.
Counties along the A4020
Connecting roads with cameras
15 cameras
Greater London, Buckinghamshire
14 cameras
Greater London, Berkshire
11 cameras
Greater London
10 cameras
Greater London
9 cameras
Essex, Greater London
6 cameras
Greater London
5 cameras
Greater London
5 cameras
Essex, Greater London
4 cameras
Greater London, Hertfordshire
Frequently asked questions
How many speed cameras are on the A4020?
There are 3 mapped speed camera locations on the A4020, grouped into 3 camera sites between Southall and Ealing. The most common limit at these cameras is 20 mph.
Does the A4020 have average speed cameras?
No permanent average speed cameras are mapped on the A4020, but temporary average speed zones are common at roadworks.
What is the speed limit on the A4020?
Limits on the A4020 change along the route: 20 mph is the most common at its cameras, with 60 mph on single-carriageway sections and 70 mph on dual carriageways unless signed otherwise.
How many collisions happen near cameras on the A4020?
In 2024 DfT STATS19 recorded 53 unique collisions within 500 m of mapped camera sites on the A4020, including 0 fatal and 7 serious.
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