A breakdown in an HGV is not merely an inconvenience — it is a potential major road safety incident. A 44-tonne articulated lorry stopped in a live lane of a motorway, or blocking a rural road, creates hazards that can result in serious collisions, injuries, and fatalities. Every professional HGV driver must know exactly what to do in the event of a breakdown: the sequence of actions, the legal obligations, the safety priorities, and the contacts to call. This guide provides a comprehensive, step-by-step breakdown procedure for HGV drivers in every scenario.

The Fundamental Priority: Get Off the Road

The single most important principle in any HGV breakdown is to get the vehicle off the live carriageway as quickly and safely as possible. A stationary HGV in a live lane is one of the most dangerous hazards on the road network. Every second the vehicle remains in a live lane increases the risk of a rear-end collision, particularly at night, in fog, or on high-speed roads.

If the vehicle can still move under its own power, even at very low speed, the driver should attempt to reach:

• The hard shoulder (on conventional motorways)
• An Emergency Refuge Area (ERA) on smart motorways
• A motorway services area or junction
• A lay-by or wide verge on A-roads and rural roads
• A side road or industrial estate entrance on urban roads

Do not stop at the first opportunity if a safer location is available within a short distance. However, do not continue driving if doing so risks losing control of the vehicle, causing a fire, or creating a greater hazard.

Motorway Breakdown Procedure: Step by Step

Motorways present the highest-risk breakdown scenario due to vehicle speeds and the absence of a safe refuge on smart motorways. The following procedure applies to all motorway breakdowns:

Step 1: Signal and Move Left

As soon as a problem is detected, signal left and move to the left lane (Lane 1) as smoothly as possible. Do not brake suddenly — maintain speed while changing lanes, then reduce speed gradually once in Lane 1. If on a smart motorway with no hard shoulder, aim for the nearest ERA.

Step 2: Pull onto the Hard Shoulder or ERA

Pull as far left as possible onto the hard shoulder, with the wheels on the hard shoulder and the vehicle parallel to the carriageway. On an ERA, pull fully into the refuge area. Switch on hazard warning lights immediately.

Step 3: Apply Parking Brake and Switch Off Engine

Apply the parking brake firmly. Switch off the engine. Leave the vehicle in gear (manual) or Park (automatic). Turn the front wheels towards the verge so that if the vehicle is struck from behind, it will move away from the carriageway rather than into it.

Step 4: Exit the Vehicle Safely

Exit via the nearside (left) door only. Never exit via the offside (right) door onto the live carriageway. Ensure all passengers exit via the nearside door. Move away from the vehicle and behind the safety barrier if one is present. Do not stand between the vehicle and the live carriageway.

Step 5: Make the Vehicle Visible

Place a warning triangle at least 45 metres behind the vehicle on the hard shoulder (not on the live carriageway). On motorways, the Highway Code recommends not placing warning triangles on the hard shoulder as this requires walking on or near the live carriageway — use hazard lights only. Check whether your operator's policy requires additional warning devices such as flashing beacons or reflective boards.

Step 6: Call for Assistance

Call your employer or depot first — they will coordinate recovery and may have preferred breakdown contractors. Then call the breakdown service. On motorways, use the roadside emergency telephone (orange SOS phones at 1-mile intervals) if your mobile phone has no signal — these connect directly to Highways England's National Traffic Operations Centre (NTOC). If there is a risk to life, call 999 first.

Step 7: Wait in a Safe Location

Wait behind the safety barrier, away from the vehicle. Do not sit in the vehicle — a rear-end collision at motorway speed can push the vehicle forward with fatal consequences. If there is no barrier, move as far from the carriageway as possible up the embankment or verge.

Smart Motorway Breakdown: Special Considerations

Smart motorways with all-lane running (ALR) present a uniquely dangerous breakdown scenario because there is no permanent hard shoulder. If an HGV breaks down on an ALR motorway and cannot reach an ERA, the driver is in a live lane with traffic potentially approaching at 70 mph.

In this situation:

1. Switch on hazard lights immediately.
2. Call 999 — this is a life-threatening emergency.
3. Highways England's CCTV operators will detect the stationary vehicle and activate red X signals over the affected lane within minutes. However, do not rely on this — exit the vehicle immediately via the nearside door.
4. Move behind the safety barrier or as far from the vehicle as possible.
5. Do not return to the vehicle until the police or Highways England confirm it is safe to do so.

Research by Highways England has shown that the average time for a stationary vehicle to be detected by CCTV and for red X signals to be activated is under 20 minutes. However, this is an average — in some cases it takes longer, and not all drivers comply with red X signals. The safest assumption is that traffic will continue to approach at speed until emergency services arrive.

A-Road and Rural Road Breakdown Procedure

On A-roads and rural roads, the procedure differs from motorways in several important respects:

Warning triangles: On non-motorway roads, warning triangles should be placed at least 45 metres behind the vehicle on the same side of the road. On a bend or hill, place the triangle before the bend or crest so that approaching drivers have maximum warning distance. On rural roads with high approach speeds, consider placing a second triangle further back.

Obstruction reporting: If the vehicle is blocking a road or causing a significant obstruction, contact the local police (non-emergency number 101) to report the obstruction. The police can arrange traffic management and may be able to expedite recovery. Do not leave the vehicle unattended without informing the police if it is causing an obstruction.

Load security: If the breakdown has caused a load shift or load spillage, do not attempt to secure or recover the load without appropriate equipment and safety measures. A spilled load on a rural road is a serious hazard. Inform the police and your employer immediately, and do not allow other vehicles to pass until the hazard is assessed.

Urban Road Breakdown Procedure

Urban breakdowns present different challenges: slower traffic speeds reduce the immediate collision risk, but the potential for obstruction is greater and the pressure from other road users to move the vehicle can be intense.

If the vehicle cannot be moved and is causing an obstruction:

• Switch on hazard lights.
• Place a warning triangle if safe to do so.
• Contact your employer and breakdown service.
• If the obstruction is causing significant disruption (for example, blocking a bus route or emergency vehicle access), contact the local police on 101.
• Do not attempt to push or tow the vehicle with another vehicle unless authorised by your employer and using appropriate equipment.

Vehicle Fire Procedure

A vehicle fire is the most dangerous breakdown scenario. HGV fires can spread rapidly, particularly in curtainsider trailers or vehicles carrying flammable loads. The procedure is:

1. Stop the vehicle as quickly and safely as possible — pull off the road if possible.
2. Switch off the engine.
3. Call 999 immediately.
4. Evacuate all occupants from the vehicle.
5. Move all persons at least 100 metres from the vehicle — fuel tanks and tyres can explode.
6. Do not attempt to fight the fire unless it is very small and you have a suitable extinguisher — your safety is the priority.
7. Warn other road users by waving them down if safe to do so.

If the vehicle is carrying ADR (dangerous goods), inform the fire service of the UN number and hazard identification number on the orange plates. The Emergency Action Code (EAC) on the Hazchem plate tells emergency services how to deal with the load. Do not approach a vehicle carrying dangerous goods that is on fire — stand well back and let the fire service manage the incident.

Tachograph and Drivers' Hours During a Breakdown

A breakdown does not suspend drivers' hours obligations. The tachograph must continue to record correctly during a breakdown. If the driver is waiting for recovery and is not able to take a proper rest (for example, because they must remain with the vehicle), this time counts as other work or availability, not rest. Drivers should note the breakdown time and circumstances in their tachograph printout or manual entry record.

If a breakdown causes a driver to exceed their daily driving time or daily duty time, this must be recorded and reported to the operator. Genuine emergencies may provide a defence under the drivers' hours regulations, but the circumstances must be documented fully.

Post-Breakdown Reporting and Defect Reporting

After a breakdown, the driver must complete a defect report as required by the operator's maintenance management system. The report should include:

• Date, time, and location of the breakdown
• Nature of the defect or failure
• Any warning lights or symptoms observed before the breakdown
• Actions taken (who was contacted, recovery details)
• Any load damage or spillage
• Any injuries or near-misses

Operators are legally required under the Road Traffic Act 1988 and the Goods Vehicles (Licensing of Operators) Act 1995 to maintain vehicles in a roadworthy condition. A breakdown that results from a known defect that was not repaired may constitute a serious maintenance failure and could affect the operator's licence. Accurate defect reporting is therefore not just a procedural requirement — it is a legal protection for both the driver and the operator.

GS Driver Training's Class 1 and Class 2 training programmes cover breakdown procedures as part of the practical training curriculum, ensuring that newly qualified drivers are prepared for real-world emergencies from day one. Understanding what to do when things go wrong is as important as knowing how to drive safely when everything is working correctly.