If you’ve driven on a UK motorway recently, you may have noticed some changes — or perhaps you’ve heard the ongoing debate and wondered what’s actually happening. Smart motorways have been one of the most controversial road safety topics in the UK for the past several years, and the situation has genuinely shifted. Here’s a clear-eyed look at where things stand in 2026.
What Is a Smart Motorway, Exactly?
Smart motorways use technology — variable speed limits, overhead gantry signs, and CCTV — to manage traffic flow in real time. The most controversial variant is the All Lane Running (ALR) motorway, which permanently converts the hard shoulder into a live running lane, relying on Refuge Areas (emergency lay-bys) spaced roughly every mile or so if drivers need to stop.
The appeal to the Treasury was obvious: extra lane capacity without the cost of physically widening a road. The concern from drivers, campaign groups, and eventually MPs was equally obvious — where do you go in a breakdown or emergency?
The Pause and Review
In 2022, the then-government announced a pause on the rollout of new ALR smart motorways following a significant period of public pressure and a damning Transport Select Committee report. National Highways was tasked with a stocktake, and the resulting evidence pointed clearly to higher casualty rates on ALR sections compared with conventional motorways with a permanent hard shoulder.
In 2023, the Conservative government went further, announcing that no new ALR smart motorways would be built and that existing sections would be evaluated with a view to restoring hard shoulders where “feasible and value for money.”
Where Things Stand in 2026
The change of government hasn’t reversed this position. Labour inherited both the pause and the pressure to act, and the broad direction of travel — away from ALR expansion — has remained. However, the restoration of hard shoulders on existing ALR sections has proven slower and more complicated than the initial announcements implied.
A number of factors are at play:
Cost and complexity. Restoring a permanent hard shoulder on a section that was redesigned for ALR involves significant infrastructure work. Some sections would require Refuge Areas to be removed or reconfigured, drainage to be adjusted, and gantry systems to be updated. National Highways has been candid that this is not a quick or cheap process.
Prioritisation. Not all ALR sections are equal in terms of risk profile or feasibility of conversion. The most high-profile and higher-risk sections have been prioritised for assessment, while others remain in the queue.
Interim safety measures. In the meantime, the commitment made under the previous government to have Stopped Vehicle Detection (SVD) technology installed across all ALR sections has been progressed. SVD uses radar and cameras to automatically detect a stationary vehicle in a live lane and trigger overhead signs to close that lane — one of the key criticisms of ALR had been the delay between a vehicle stopping and the lane being closed.
What This Means for Drivers Right Now
If you’re driving on an ALR motorway today — sections of the M25, M6, M1, M3, M4, and others — here’s what you need to know:
Red X means stop. A red X on an overhead gantry means the lane is closed. It is now a criminal offence to ignore a red X signal, and enforcement cameras are active. Yet surveys consistently show a worrying proportion of drivers still don’t comply. Don’t be one of them — that closed lane may contain a broken-down vehicle or emergency responder.
Know your Refuge Areas. Blue signs with an orange SOS telephone symbol mark Refuge Areas. If your vehicle develops a problem, your absolute priority is to reach one of these. If you cannot, put on your hazard lights immediately, move as far left as possible, and — if it is safe to exit — get behind the barrier and call 999. National Highways’ advice is clear: never stand on the carriageway.
Variable speed limits are enforced. Mandatory variable speed limits on smart motorway sections are enforced by cameras. A 50mph limit during congestion is not advisory — it carries the same legal weight as any other speed limit sign.
The Broader Picture
It’s worth being honest about the complexity here. Conventional motorways with hard shoulders are not without risk either — breakdowns on hard shoulders account for a significant number of casualties, and the original rationale for smart motorways included removing the danger of vehicles travelling at speed past stationary ones on the hard shoulder.
The argument was never that hard shoulders are perfectly safe; it was that the mitigation measures on ALR motorways — Refuge Area spacing, response times, SVD technology — were not yet adequate to replace them. That case appears to have been accepted by successive governments.
For drivers, the practical upshot is this: ALR motorways are not going anywhere overnight, but the safety infrastructure supporting them is being improved, and the political will to expand them further has evaporated. Drive accordingly — attentively, with awareness of the gantry signs, and with a plan for what you’ll do if something goes wrong.
That’s not unique advice for smart motorways, of course. But on these roads, it matters more than most.
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