Speed Cameras on the M4
Smart motorway28
Total Cameras
3
Speed Limits
6
Counties
7
Cities
Interactive camera map
The map loads when it enters view.
Camera Types on the M4
Fixed: 28
Speed Limits
40 mph
1
50 mph
12
70 mph
11
Unknown
4
All Cameras on the M4
Camera directory loaded with 28 records.
| Type | Speed Limit | Road | Location |
|---|---|---|---|
| Fixed | 50 mph | M4 | Newport |
| Fixed | 40 mph | M4 | Ealing |
| Fixed | — | M4 | Cardiff |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 50 mph | M4 | Newport |
| Fixed | 70 mph | M4 | Maidenhead |
| Fixed | — | M4 | Maidenhead |
| Fixed | — | M4 | Maidenhead |
| Fixed | — | M4 | Maidenhead |
| Fixed | 70 mph | M4 | Reading |
| Fixed | 70 mph | M4 | Maidenhead |
| Fixed | 70 mph | M4 | Slough |
| Fixed | 70 mph | M4 | Slough |
| Fixed | 70 mph | M4 | Slough |
| Fixed | 70 mph | M4 | Slough |
| Fixed | 70 mph | M4 | Slough |
| Fixed | 70 mph | M4 | Windsor |
Showing 1–25 of 28
Counties & Cities Along the M4
Related Roads
Frequently Asked Questions
How many speed cameras are on the M4?
There are 28 speed cameras on the M4.
Does the M4 have average speed cameras?
The M4 does not currently have permanent average speed cameras, though temporary ones may be in place during roadworks.
What is the speed limit on the M4?
The standard speed limit on the M4 is 70 mph. However, smart motorway sections have variable speed limits (typically 40–60 mph) enforced by HADECS3 cameras.