A breakdown at 56mph is one of the highest-risk minutes in a professional driver’s working life, and the Highway Code gives it a dedicated rulebook: rules 274 to 287, covering breakdowns and incidents. Every driver briefing should treat these as drilled procedure, not reading material - because the driver who needs them has no time to look them up.
Rule 275 frames everything that follows around “places of relative safety”, and the golden rule comes from rule 277: if your vehicle develops a problem, leave the carriageway at the next exit or pull into a service area if you possibly can. Only when that is impossible do you fall back to the roadside position:
The Highway Code’s illustration for rule 277 says it in the caption: keep well away from your vehicle and moving traffic. The cab is where people die in secondary collisions; the verge behind the barrier is where they do not. In a truck the temptation is to stay with the load - resist it. Cargo is insured; the driver is not replaceable.
On motorways without a hard shoulder - or where the hard shoulder is running as a live lane - emergency areas are the refuge: blue signs with an orange SOS telephone symbol, sometimes orange surfacing, for emergencies only (rule 270). Rule 278 covers the exit from them: rejoining the carriageway from a standing start into live traffic is its own hazard, and the emergency telephone in the area connects you to the people who can help you do it safely.
Two short rules carry commercial weight:
Rule 283 sets the drill: stop in a place of relative safety, warn other traffic, call 999 with full details of location and casualties (on a motorway use an emergency telephone or the SOS button - they pinpoint you), move uninjured people away from vehicles, and be prepared to exchange details. Where dangerous goods are involved (rule 285), the same drill applies with extra emphasis on warning others about what is being carried.
These are MUSTs with statute behind them - section 170 of the Road Traffic Act 1988:
Missing the 24-hour or seven-day windows is itself an offence, entirely separate from who caused the collision. A driver can be blameless in the crash and still prosecuted for the paperwork.
Breakdowns and collisions are when procedure earns its keep. Rules 274 to 287 are short, specific and written in blood - make them muscle memory before they are needed.