M4 traffic: live crashes, closures and delays

No incidents reported on the M4 right now.

Updated 22:41 UK time. The live map updates every minute.

Open the M4 on the live map

Right now on the M4

Nothing reported on the M4 at the moment.

Earlier today

1. ▲

   M4 westbound · J4–J4b

   Obstruction or hazard

   22:01–22:37 (cleared after 37 min)

   Motorway signs

   1. 22:01 Motorway signs: “REPORT OF OBSTRUCTION”
   2. 22:37 Motorway signs no longer show “REPORT OF OBSTRUCTION”
   3. 22:37 All clear: no source reports it any more
2. ▲

   M4 eastbound · J10–J8

   Obstruction or hazard

   16:26–17:06 (cleared after 40 min) · delay ~3 min · queue 3.4 mi

   TomTom · Motorway signs

   1. 16:26 Motorway signs: “REPORT OF OBSTRUCTION”
   2. 16:49 TomTom: queueing traffic, “Queuing traffic”, delay ~7 min
   3. 16:58 TomTom: “Slow traffic”
   4. 17:02 TomTom no longer reports it
   5. 17:06 Motorway signs no longer show “REPORT OF OBSTRUCTION”
   6. 17:06 All clear: no source reports it any more
3. B

   M4 eastbound · J24

   Broken-down vehicle

   16:07–16:38 (cleared after 31 min)

   Traffic Wales

   1. 16:07 Traffic Wales: broken-down vehicle
   2. 16:38 Traffic Wales no longer reports it
   3. 16:38 All clear: no source reports it any more
4. ▲

   M4 eastbound · J5–J4b

   Obstruction or hazard

   15:30–16:06 (cleared after 36 min)

   Motorway signs

   1. 15:30 Motorway signs: “REPORT OF OBSTRUCTION”
   2. 16:06 Motorway signs no longer show “REPORT OF OBSTRUCTION”
   3. 16:06 All clear: no source reports it any more
5. ▲

   M4 eastbound · J11–J10

   Obstruction or hazard

   15:30–16:06 (cleared after 36 min)

   Motorway signs

   1. 15:30 Motorway signs: “REPORT OF OBSTRUCTION”
   2. 16:06 Motorway signs no longer show “REPORT OF OBSTRUCTION”
   3. 16:06 All clear: no source reports it any more
6. ▲

   M4 westbound · J11–J12

   Obstruction or hazard

   14:59–15:36 (cleared after 37 min)

   Motorway signs

   1. 14:59 Motorway signs: “REPORT OF OBSTRUCTION”
   2. 15:36 Motorway signs no longer show “REPORT OF OBSTRUCTION”
   3. 15:36 All clear: no source reports it any more
7. ?

   M4 eastbound · J10–J8

   Incident

   10:19–11:04 (cleared after 45 min)

   Motorway signs

   1. 10:19 Motorway signs: “INCIDENT [HCA2]”
   2. 11:04 Motorway signs no longer show “INCIDENT [HCA2]”
   3. 11:04 All clear: no source reports it any more
8. B

   M4 eastbound · J10–J8

   Broken-down vehicle

   2 of 4 lanes closed · 10:16–11:13 (cleared after 57 min)

   National Highways ×3 · Motorway signs

   1. 10:16 Motorway signs: “STRANDED VEHICLE”
   2. 10:31 National Highways: 2 of 4 lanes closed
   3. 10:31 National Highways: 1 of 4 lanes closed
   4. 11:04 Motorway signs no longer show “STRANDED VEHICLE”
   5. 11:04 All clear: no source reports it any more
   6. 11:13 National Highways: lane closure lifted
9. B

   M4 eastbound · J20–J19

   Broken-down vehicle

   09:34–17:36 (cleared after 8 h 2 min)

   Motorway signs

   1. 09:16 Motorway signs: “STRANDED VEHICLE-SLOW”
   2. 10:04 Motorway signs no longer show “STRANDED VEHICLE-SLOW”
   3. 10:04 All clear: no source reports it any more
   4. 17:06 Motorway signs: “STRANDED VEHICLE-SLOW” (reported again)
   5. 17:36 Motorway signs no longer show “STRANDED VEHICLE-SLOW”
   6. 17:36 All clear: no source reports it any more
10. ▲

    M4 eastbound · J18–J17

    Obstruction or hazard

    08:52–09:34 (cleared after 42 min)

    Motorway signs

    1. 08:52 Motorway signs: “REPORT OF DEBRIS”
    2. 09:34 Motorway signs no longer show “REPORT OF DEBRIS”
    3. 09:34 All clear: no source reports it any more
11. ▲

    M4 westbound · J7–J8

    Obstruction or hazard

    06:48–07:34 (cleared after 45 min)

    Motorway signs

    1. 06:48 Motorway signs: “REPORT OF DEBRIS”
    2. 07:34 Motorway signs no longer show “REPORT OF DEBRIS”
    3. 07:34 All clear: no source reports it any more
12. ?

    M4 eastbound · J8–J7

    Incident

    05:52–06:33 (cleared after 41 min)

    Motorway signs

    1. 05:52 Motorway signs: “INCIDENT [HCA2]”
    2. 06:33 Motorway signs no longer show “INCIDENT [HCA2]”
    3. 06:33 All clear: no source reports it any more
13. ✕

    M4 westbound · J8–J10

    Lane closure

    2 of 4 lanes closed · 04:26–05:15 (cleared after 49 min)

    National Highways ×2 · Motorway signs

    1. 04:26 Motorway signs: “INCIDENT [HCA2]”
    2. 04:35 National Highways: 2 of 4 lanes closed
    3. 04:35 National Highways: 1 of 4 lanes closed
    4. 05:03 Motorway signs no longer show “INCIDENT [HCA2]”
    5. 05:03 All clear: no source reports it any more
    6. 05:15 National Highways: lane closure lifted
14. B

    M4 westbound · J8–J10

    Broken-down vehicle

    2 of 4 lanes closed · 04:02–05:15 (cleared after 1 h 13 min)

    National Highways ×3 · Motorway signs

    1. 04:02 Motorway signs: “STRANDED VEHICLE”
    2. 04:08 National Highways: 2 of 4 lanes closed
    3. 04:35 National Highways: 2 of 4 lanes closed
    4. 05:03 Motorway signs no longer show “STRANDED VEHICLE”
    5. 05:15 National Highways: lane closure lifted
    6. 05:15 All clear: no source reports it any more
15. ▲

    M4 westbound · J17–J18

    Obstruction or hazard

    03:11–05:33 (cleared after 2 h 23 min)

    Motorway signs ×2

    1. 03:11 Motorway signs: “REPORT OF DEBRIS”
    2. 04:04 Motorway signs: “INCIDENT AHEAD”
    3. 04:33 Motorway signs no longer show “REPORT OF DEBRIS”
    4. 05:33 Motorway signs no longer show “INCIDENT AHEAD”
    5. 05:33 All clear: no source reports it any more

The M4 over the last 7 days

• 51 incidents recorded, 0 of them collisions
• Typical time to clear: 53 min (median of 49)
• Most incidents started between 08:00–09:00

About this page

This page lists incidents on the M4 as the data sources report them: lane and road closures set by National Highways, what the overhead message signs say ("REPORT OF COLLISION", "STRANDED VEHICLE"), and TomTom's reports with delay times and queue lengths. Reports of the same event are merged, and every line comes from the sources' own facts. Times are UK time. Always follow the signs on the road.

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