Which UK motorway lane can you use? Cars, trailers, HGVs & learners compared
"Keep left unless overtaking" sounds like the whole rule. It isn't. Several vehicle types are banned from a motorway's right-hand lane at all times, even when the road is empty and nobody is being overtaken — and the ban applies by vehicle type and weight, not by how many lanes the motorway happens to have. Most advice pages explain one vehicle at a time (towing a caravan, driving an HGV, taking a motorway lesson as a learner), so it's easy to come away thinking the rules are more complicated, or less consistent, than they actually are. Lined up side by side, they reduce to one definition of "right-hand lane" plus a single list of who it excludes.
The default rule: Rule 264
On any motorway, an ordinary car, motorcycle, or van may use any lane. The baseline instruction (Rule 264 of the Highway Code) is simply to stay in the left-hand lane unless overtaking, and to move back to the left once it's safe after overtaking is complete. That default is all most drivers ever need. The complications below only bite once a vehicle falls into one of the restricted categories, or once a road user is barred from the motorway network entirely.
What "the right-hand lane" actually means
This is the detail that trips people up: "the right-hand lane" always means the single outermost lane, however many lanes the motorway has. On a three-lane motorway that's lane 3. On a four-lane motorway it's lane 4 — a restricted vehicle may still use lanes 1, 2, and 3. The restriction never widens to "the outer two lanes" just because the road has more of them, and it never applies at all on a motorway with only two lanes, where a restricted vehicle may use either one.
Who Rule 265 bans from the right-hand lane
Rule 265 lists the vehicle categories that must not use the right-hand lane of a motorway with three or more lanes, except in prescribed circumstances such as a lane closure. The categories are defined by weight and seating capacity, not by vehicle name, which is why two outwardly similar vehicles can be treated differently:
| Vehicle | Threshold that triggers the ban | Lanes it may use (3-lane motorway) |
|---|---|---|
| Any vehicle drawing a trailer or caravan | No weight threshold — towing anything at all triggers it | 1 and 2 only |
| Goods vehicle, 3.5–7.5 tonnes | Only if required to be fitted with a speed limiter | 1 and 2 only |
| Goods vehicle over 7.5 tonnes | Maximum laden weight exceeds 7.5 tonnes | 1 and 2 only |
| Coach or minibus, over 7.5 tonnes, 9+ seats | Built or adapted to carry more than 8 passengers plus the driver | 1 and 2 only |
| Coach or minibus, up to 7.5 tonnes, 9+ seats | Only if required to be fitted with a speed limiter | 1 and 2 only |
| Ordinary car, motorcycle, van (no trailer) | None — not a restricted category | 1, 2, and 3 |
Notice that towing has no weight cut-off: a car towing a small single-axle trailer is restricted exactly as firmly as an HGV is. It's the act of drawing a trailer that matters, not how heavy the load is. The speed-limiter condition on the two middle rows exists because in Great Britain goods vehicles over 3.5 tonnes and most buses/coaches over 7.5 tonnes (or carrying more than 8 passengers) are legally required to have a speed limiter fitted, which is what actually puts them in the restricted category — an identical-looking vehicle that was somehow exempt from the limiter requirement would not be.
Worked example: a four-lane motorway
Picture a four-lane motorway (lanes 1 to 4, lane 4 being the right-hand lane) carrying four vehicles side by side: an ordinary car, a car towing a small caravan, a 26-tonne rigid HGV, and a 16-seat minibus with a speed limiter fitted.
- The ordinary car may use any of lanes 1, 2, 3, or 4 — it isn't a restricted category, so the usual "keep left unless overtaking" rule is the only thing governing which lane it sits in.
- The car-and-caravan combination may use lanes 1, 2, or 3, but never lane 4 — towing anything bars it from the single outermost lane, regardless of how many lanes exist inboard of it.
- The 26-tonne HGV may also use lanes 1, 2, or 3 only. Its weight (over 7.5 tonnes) puts it in the same "lane 4 is off-limits" category as the caravan, even though an HGV and a towed caravan look nothing alike.
- The 16-seat minibus is restricted the same way: over 8 passenger seats plus the speed-limiter requirement place it in a restricted category, so lane 4 is closed to it too.
Three of the four vehicles end up sharing lanes 1–3 despite having almost nothing in common physically. That's the pattern worth remembering: the restriction is defined by category (towing, weight, passenger count plus limiter), and it always closes off exactly one lane — the rightmost one — never more.
Who can't use the motorway at all
A separate rule, Rule 253, bans some road users from motorways completely, regardless of lane. This list is worth keeping distinct from the lane-restriction table above, because it's an outright ban rather than a "lanes 1–2 only" restriction:
| Road user | Status |
|---|---|
| Pedestrians, cyclists, horse riders | Banned outright |
| Riders of motorcycles or mopeds under 50cc (4kW) | Banned outright |
| Holders of a provisional motorcycle licence | Banned outright, even on a machine over 50cc |
| Holders of a provisional car licence | Banned, unless accompanied by a DVSA-approved driving instructor (ADI), in a car fitted with dual controls and displaying L plates |
The learner-driver exception, explained
That last row is the one that surprises people who learned to drive before 2018: provisional car licence holders were banned from every motorway in Great Britain until a Highway Code change took effect on 4 June 2018. Since that date, a learner may take a motorway lesson, but only under all three conditions at once — a DVSA-approved instructor in the car, dual controls fitted, and L plates displayed. Taking motorway lessons is voluntary on the instructor's side (it's their judgement whether a particular learner is ready), and the exception doesn't override separate traffic signs that specifically prohibit learner drivers on a given stretch of road. A learner accompanied only by a family member with a full licence — the usual arrangement for ordinary practice — still may not drive on a motorway at all; the ADI-plus-dual-controls condition is not optional.
Quick reference
| Situation | Rule |
|---|---|
| Car, van, or motorcycle with no trailer | Any lane; keep left unless overtaking (Rule 264) |
| Towing a trailer or caravan (any weight) | Right-hand lane banned on a 3+ lane motorway (Rule 265) |
| Goods vehicle over 7.5 tonnes | Right-hand lane banned (Rule 265) |
| Goods vehicle 3.5–7.5 tonnes with a speed limiter | Right-hand lane banned (Rule 265) |
| Coach/minibus, 9+ seats, with a speed limiter | Right-hand lane banned (Rule 265) |
| Motorway with only two lanes | No right-hand lane restriction applies at all |
| Pedestrians, cyclists, horse riders, sub-50cc riders, provisional motorcyclists | Banned from the motorway entirely (Rule 253) |
| Provisional car licence holder | Banned unless with an ADI, dual controls, and L plates (Rule 253, since 4 June 2018) |
This is educational practice material, not a substitute for reading the full Highway Code or for professional driving instruction; always check current guidance before relying on any specific rule. For more practice applying these rules to real scenarios, try the motorway rules practice questions.
Source: UK Highway Code, Rules 253, 264 and 265 (gov.uk/guidance/the-highway-code/motorways-253-to-273); DVSA bulletin "Learner drivers on motorways from 4 June 2018" (content.govdelivery.com/accounts/UKDVSA/bulletins/1dd35b7).