A1(M) Speed Limits Now
Temporary speed limits on the A1(M) are listed here, whether they are set on the electronic signs or through roadworks. Where nothing temporary applies, the national limit is in force.
On the A1(M) right now: 0 speed restrictions in force.
Checked 03:32 Sat 26 Sept 2026 These are the variable speed limits National Highways set on the overhead signals, usually for queues, incidents or roadworks.
Red ring = mandatory. A speed in a red ring is the legal limit. A number without the ring is an advisory speed. National Highways change these every few minutes, so we show when each was set.
⚠ Our last check of the speed signals was more than an hour ago, so we have hidden the speed limits until we check again.
0 speed limits on this page
Source: National Highways’ Speed Managed Areas data, as at 03:32 Sat 26 Sept 2026. Speeds converted from km/h to mph. Powered by National Highways’ Transport Data Feeds.
Why an A1(M) limit changes
A lower limit may be set to even out traffic as it builds, to shield anyone working at an incident, or to slow vehicles through a coned-off section of works.
A number shown inside a red circle, overhead or at the roadside, is a mandatory limit. Roadworks limits are enforced in exactly the same way, so they sit in this list with the rest.
Where a lower limit reaches the most drivers
On the A1(M) that is the stretch just north of Leeds where the M1 has merged in: Junctions 43 to 44 carried 142,783 vehicles a day in the Department for Transport road traffic statistics, 2025. Hertfordshire’s Junctions 8 to 9 and 3 to 4 each carried more than 90,000, and on Tyneside Junctions 64 to 65 carried 92,444.
The two-lane Doncaster Bypass
Junctions 34 to 38 have two lanes each way, unlike most of the A1(M), and between Junctions 35 and 37 carry more than 15,000 lorries a day. A roadworks limit on this section is worth checking before a journey past Doncaster.
Limits on the plain A1
This page covers the four A1(M) sections. Temporary limits on the plain A1 between them are part of the reports on A1 traffic news.
Reading this page
- Every entry names the place, the carriageway and the limit in mph.
- Roadworks limits are flagged, and a filter lets you show or hide them.
- A limit can be lifted or changed at any time; the list reflects the moment of its last refresh.
The wording on the same A1(M) signs is on A1(M) overhead signs, and the works behind a roadworks limit are on A1(M) roadworks.
Traffic count figures on this page are from the Department for Transport road traffic statistics, 2025.