Motorway Driving Rules UK

Last Updated: 18 September 2026

Many motorists use motorways, but how many drivers are up to speed with the latest rules and regulations? 

In this article, we explain the rules of driving on a motorway, what vehicles are not allowed on the motorway, and when you can stop on the hard shoulder… 

What are the rules for driving on a motorway?

The Highway Code sets mandatory motorway rules for all road users to follow. Because motorway traffic tends to travel faster than on other roads, drivers generally have less time to react if a problem occurs. 

Because of the heightened risks to motorists when travelling on a motorway, there are many more rules to be aware of. Rules 253 to 274 in the Highway Code apply to motorways and high-speed roads, which we’ve highlighted below:

Motorway signs and signals

Rules 255 to 258

Signs and signals on motorways draw drivers' attention to potential hazards, including accidents, fog, oil spillage, or workers on the road, to name a few. Warning signs alert motorists to the problem and highlight which motorway lanes are affected.

Amber flashing lights appear on signs to warn of a hazard ahead. To prepare for the hazard, motorists should immediately reduce their speed and only increase it again when they pass a sign that says ‘END’ or doesn't show amber flashing lights.

Red flashing lights appear on signs to warn of lane closures and will also display a large red ‘X’ to show which lane or lanes are closed. When seeing this sign, motorists must move safely into an open lane and do so until an ‘END’ sign appears.   

Joining the motorway

Rule 259

It’s important to understand that when joining a motorway, you will either approach it from an adjoining motorway or from a slip road on the left-hand side. To safely join a motorway, motorists must:

• Always give priority to approaching traffic already travelling on the motorway
• Ensure their speed matches the flow of oncoming traffic 
• Remain driving on the slip road if it continues as a lane onto the motorway
• Adjust the speed in keeping with motorway traffic before overtaking 

On the motorway

Rules 260 to 263

When driving on the motorway, you should continue at a steady speed within the designated speed limit and keep a safe distance from the vehicle in front by using the two-second rule.  

The speed limit on a motorway in the UK is 70 mph for most vehicles, dropping to 60 mph for some larger vehicles, as explained in the table below:

Driving on the motorway can become monotonous and therefore make you feel sleepy. Services are purposely placed along motorways to encourage drivers to stop and take a break. Speeding and dangerous driving are punishable offences and can result in penalty points, fines, or even a jail term depending on the severity.

Lane discipline 

Rules 264 to 266

There are a handful of rules to follow when using lanes on a motorway. Motorway driving etiquette states that you must:

• Stay in the left-hand lane unless you are overtaking
• Always be aware of emergency service vehicles, traffic officers, recovery road workers, and broken-down vehicles that may cause you to change lane.
• The right-hand lane of a motorway with three or more lanes must not be used by vehicles pulling a trailer, goods vehicles exceeding 3.5 tonnes, or passenger vehicles with more than eight seats.s
• When approaching a junction, look ahead for signs and watch for vehicles joining the motorway from the left-hand side; adjust your speed and lane as needed.

Overtaking 

Rules 267 to 269

Overtaking on the motorway should only happen when it is safe and legal to do so. Overtaking on a motorway is strictly prohibited, so you should only ever pass another vehicle by using the right-hand lane. When overtaking another vehicle, you should always take time to:

• Be aware of the traffic around you by checking your mirrors and blind spot
• Judge the speeds of vehicles around you
• Check the lane you’re joining for sufficient space for you to manoeuvre into safely
• Look out for motorcyclists who can appear out of nowhere very quickly

Stopping

Rules 270 to 272

You should not at any point stop your vehicle on a moving lane of a motorway. If you need to stop your vehicle, use the hard shoulder or a designated emergency area if the hard shoulder is used as an extra lane. Orange SOS telephones are located along hard shoulders and emergency areas, where you can call for help or assistance.

Leaving the motorway

Rules 273 to 274

In most instances, you’ll leave the motorway via a slip road on your left, unless a sign indicates that a lane leads directly off the motorway. It’s important to look out for the signs that let you know you’re approaching the exit before moving across to the left-hand lane. Always indicate in plenty of time and adjust your speed accordingly on the slip road. 

Always pay attention to the speed limit when leaving the motorway, as you’ll likely meet traffic lights or a roundabout.          

What vehicles are not allowed on a motorway?

Not all vehicles and drivers are allowed on a motorway. Persons, vehicles and drivers prohibited from using a motorway in the UK include:

• Pedestrians
• Cyclists
• Horse riders
• Holders of a provisional car licence (unless accompanied by an approved DVSA driving instructor)
• Holders of a provisional motorcycle licence
• Riders of motorcycles under 50cc 
• Some types of slow-moving vehicles
• Certain types of vehicles carrying oversized loads
• Agricultural vehicles
• Powered wheelchairs
• Powered mobility scooters

When should you use the hard shoulder on a motorway?

The hard shoulder isn’t forisn'ters to pull over and stop for a snack or a chat on the phone; it should be used only in an emergency. Emergency vehicles or traffic officers often use the hard shoulder, so it isn't claisn'tas a designated stopping place. 

You should use the hard shoulder on a motorway only as a last resort, such as a place of refuge for a broken-down vehicle or to wait for emergency assistance. Using a hard shoulder at any other time can result in a £100 on-the-spot fine and three points on your driving licence. 

In some cases, the hard shoulder may be used as a temporary motorway lane if one or more lanes are blocked. Designated motorway signage will alert drivers accordingly if this is the case.    

What is a smart motorway?

Smart motorways are an intelligent transport system designed to regulate traffic flow and ease congestion. In the UK, many miles of smart motorway use traffic management systems to ensure consistent traffic flow and manage particularly busy stretches of road. There are three different types of smart motorways in the UK, including:

All Lane Running

When an All Lane Running smart motorway is in operation, the hard shoulder is removed in favour of free-flowing traffic. In this instance, the hard shoulder is closed to vehicles and instead used as a full-flowing motorway lane in the event of an incident which leads to lane closure. As such, emergency refuge areas (ERAs) are available to drivers should they need to pull over in an emergency.

Dynamic Hard Shoulder

In this instance, the hard shoulder is used as a motorway lane during particularly busy periods to ease congestion. Overhead signs will alert drivers to whether the Dynamic Hard Shoulder scheme is in force at any given time. 

Controlled Motorway

Controlled Motorway schemes are used to roll out variable speed limits, whereby the hard shoulder remains as an emergency stopping place. Motorway signage displays variable speed limits at any point along the route, ranging from 10 mph to 70 mph depending on traffic flow. 

Motorway traffic and travel updates

When travelling on a motorway, always stick to the designated speed limits and follow motorway rules. To help make your journey smoother, check the National Highways website for the latest travel updates so you can plan your motorway journey accordingly.

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