What the M4 overhead signs are showing
This page shows what the M4 overhead signs are displaying right now — the electronic message signs National Highways use to warn drivers about closures, queues, hazards and journey times. They are listed junction by junction, in the direction of travel, for both carriageways.
Each message shows when National Highways last set it and how long ago. Signs can warn about a road ahead, so a message may be about a road you join later. We take road-closed messages off this page 12 hours, and other messages 2 hours, after National Highways last set them.
M4 overhead signs now
65 overhead signs on the M4 are showing a message right now.
Checked 02:42 Fri 11 Sept 2026 Each message shows when National Highways last set it, and how long ago.
Two kinds of traffic information. This page shows what the overhead signs on the M4 are displaying. Our latest traffic news shows National Highways’ incident and roadworks reports. Each can carry something the other does not, so we show both and label which is which - check both before you travel.
⚠ 6 of these messages were set more than 2 hours ago and are marked in amber. Signs can stay on after the event has passed. We take road-closed messages off our pages 12 hours, and other sign messages 2 hours, after National Highways last set them, even if the sign is still showing.
⚠ Our last check of the overhead signs was more than an hour ago, so we have hidden the sign messages until we check again.
Road closures on the signs
A34 NORTH CLOSED AFTER A415
Time now: Friday, 11 September 2026, 02:4202:3311 Sept 2026set 8 min ago✓ Checked by us 02:42
A34 NORTH
CLOSED AFTER
A415Overhead sign
On 4 signs on the M4, including M4 westbound between J11 and J12. On the signs since at least 23:21 Thu 10 Sept 2026.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 CLOSED
Time now: Friday, 11 September 2026, 02:4202:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
On 35 signs on the M4, M25 and M40, including M4 eastbound between J5 and J4B. On the signs since at least 22:29 Thu 10 Sept 2026.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.A417 CLOSED AFTER A429
Time now: Friday, 11 September 2026, 02:4221:2810 Sept 2026set 5 hrs ago⚠ 5 hrs old✓ Checked by us 02:42
A417 CLOSED
AFTER A429Overhead sign
On 6 signs on the M4, including M4 westbound between J14 and J15.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.
M4 westbound signs (J4 → J19)
In junction order, in the direction of travel.
Report of obstruction
01:3411 Sept 2026set 1 hr ago✓ Checked by us 02:42
REPORT OF
OBSTRUCTIONOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.Report of obstruction
00:5111 Sept 2026set 2 hrs ago✓ Checked by us 02:42
REPORT OF
OBSTRUCTIONOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J5 4 mins J6 8 mins J8 13 mins
02:1511 Sept 2026set 26 min ago✓ Checked by us 02:42
J5 4 MINS
J6 8 MINS
J8 13 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.TO J10 READING 8 MILES 9 MINS
02:2411 Sept 2026set 17 min ago✓ Checked by us 02:42
TO J10 READING
8 MILES
9 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J12 6 miles 8 mins
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
J12
6 MILES
8 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.A34 NORTH CLOSED AFTER A415
02:3311 Sept 2026set 8 min ago✓ Checked by us 02:42
A34 NORTH
CLOSED AFTER
A415Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.A417 CLOSED AFTER A429
21:2810 Sept 2026set 5 hrs ago⚠ 5 hrs old✓ Checked by us 02:42
A417 CLOSED
AFTER A429Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.Queue ahead
01:1011 Sept 2026set 2 hrs ago✓ Checked by us 02:42
QUEUE
AHEADOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 12 MINS J15 33 MINS
02:3211 Sept 2026set 9 min ago✓ Checked by us 02:42
J13 12 MINS
J15 33 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 10 MINS J15 31 MINS
02:3011 Sept 2026set 11 min ago✓ Checked by us 02:42
J13 10 MINS
J15 31 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.Caution
01:1011 Sept 2026set 2 hrs ago✓ Checked by us 02:42
CAUTION
Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.A417 CLOSED AFTER A429
21:2810 Sept 2026set 5 hrs ago⚠ 5 hrs old✓ Checked by us 02:42
A417 CLOSED
AFTER A429Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 14 MINS J18 42 MINS
02:2111 Sept 2026set 20 min ago✓ Checked by us 02:42
J15 14 MINS
J18 42 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.A417 CLOSED AFTER A429
21:2810 Sept 2026set 5 hrs ago⚠ 5 hrs old✓ Checked by us 02:42
A417 CLOSED
AFTER A429Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 10 MINS J18 38 MINS
02:2711 Sept 2026set 15 min ago✓ Checked by us 02:42
J15 10 MINS
J18 38 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J19 34 MINS J20 37 MINS
02:2811 Sept 2026set 13 min ago✓ Checked by us 02:42
J19 34 MINS
J20 37 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J19 20 MINS J20 22 MINS
02:3311 Sept 2026set 8 min ago✓ Checked by us 02:42
J19 20 MINS
J20 22 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J19 10 MINS J20 12 MINS
02:3011 Sept 2026set 11 min ago✓ Checked by us 02:42
J19 10 MINS
J20 12 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J19 16 MINS J20 19 MINS
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
J19 16 MINS
J20 19 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J19 11 MINS J20 14 MINS
01:5411 Sept 2026set 47 min ago✓ Checked by us 02:42
J19 11 MINS
J20 14 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J20 10 MINS J21 12 MINS
02:1311 Sept 2026set 28 min ago✓ Checked by us 02:42
J20 10 MINS
J21 12 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J20 3 mins J22 8 mins
02:2411 Sept 2026set 17 min ago✓ Checked by us 02:42
J20 3 MINS
J22 8 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.
M4 eastbound signs (J20 → J3)
In junction order, in the direction of travel.
TO J16 SWINDON 31 MILES 33 MINS
02:3011 Sept 2026set 11 min ago✓ Checked by us 02:42
TO J16 SWINDON
31 MILES
33 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.TO J16 SWINDON 32 MILES 34 MINS
02:1311 Sept 2026set 29 min ago✓ Checked by us 02:42
TO J16 SWINDON
32 MILES
34 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J17 3 MINS J15 21 MINS
02:3111 Sept 2026set 10 min ago✓ Checked by us 02:42
J17 3 MINS
J15 21 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 8 MINS J13 28 MINS
02:3311 Sept 2026set 8 min ago✓ Checked by us 02:42
J15 8 MINS
J13 28 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 7 MINS J13 27 MINS
02:1511 Sept 2026set 26 min ago✓ Checked by us 02:42
J15 7 MINS
J13 27 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 6 MINS J13 25 MINS
02:3211 Sept 2026set 9 min ago✓ Checked by us 02:42
J15 6 MINS
J13 25 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J15 5 MINS J13 25 MINS
02:0911 Sept 2026set 32 min ago✓ Checked by us 02:42
J15 5 MINS
J13 25 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 18 MINS J12 30 MINS
02:2411 Sept 2026set 17 min ago✓ Checked by us 02:42
J13 18 MINS
J12 30 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 12 MINS J12 24 MINS
02:3011 Sept 2026set 11 min ago✓ Checked by us 02:42
J13 12 MINS
J12 24 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 6 MINS J11 24 MINS
02:3111 Sept 2026set 10 min ago✓ Checked by us 02:42
J13 6 MINS
J11 24 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.J13 5 MINS J11 23 MINS
02:2811 Sept 2026set 13 min ago✓ Checked by us 02:42
J13 5 MINS
J11 23 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.Exit closed at J10
02:1811 Sept 2026set 23 min ago✓ Checked by us 02:42
EXIT CLOSED
AT J10Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.Exit closed at J10
02:1811 Sept 2026set 23 min ago✓ Checked by us 02:42
EXIT CLOSED
AT J10Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.EXIT CLOSED AT J10
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
EXIT CLOSED
AT J10Overhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 CLOSED
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
00:4211 Sept 2026set 2 hrs ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
22:2910 Sept 2026set 4 hrs ago⚠ 4 hrs old✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
22:2910 Sept 2026set 4 hrs ago⚠ 4 hrs old✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.To M25 5 miles 6 mins
02:3011 Sept 2026set 11 min ago✓ Checked by us 02:42
TO M25
5 MILES
6 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 closed
22:2910 Sept 2026set 4 hrs ago⚠ 4 hrs old✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M25 J13-J12 CLOSED
02:1111 Sept 2026set 30 min ago✓ Checked by us 02:42
M25 J13-J12
CLOSEDOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.TO J1 FOR A4 7 MINS
02:1711 Sept 2026set 24 min ago✓ Checked by us 02:42
TO J1 FOR A4
7 MINSOverhead sign
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.
Source: National Highways’ overhead message signs, as at 02:42 Fri 11 Sept 2026. Signs can warn about roads ahead, so a message may be about a road you join later. Powered by National Highways’ Transport Data Feeds.
About the M4 overhead signs
The messages on this page come from National Highways’ own feed of the electronic signs above and beside the M4. We show them exactly as National Highways set them. A sign can be switched to a new message at any moment, so always follow the signs you can see on the road. For accidents, closures and roadworks see our Latest M4 Traffic News page.