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When a 45-minute break is due, how split breaks work, what counts as a legal break, and how the 4.5-hour driving limit is recorded and reset.
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Here is the rule in a sentence: after 4.5 hours of driving you owe a 45-minute break before you drive again. What trips people up is in how those hours and minutes are counted.
This comes from Article 7 of assimilated Regulation (EC) No 561/2006 and is set out in the DVSA drivers’ hours guidance for goods vehicles.
This article covers the assimilated rules, previously called the EU rules, which is where the 4.5-hour limit and 45-minute break live. They apply to most in-scope UK HGV and PSV work:
From 1 July 2026 the scope widens: goods vehicles or combinations over 2.5 tonnes used for international or cabotage work for hire and reward also come into the assimilated rules and need a smart tachograph. This does not affect UK-only journeys, which stay under GB domestic rules.
Driving time is the time the vehicle spends moving while you are at the wheel under the assimilated rules. The tachograph records it automatically, switching to the driving symbol the moment the vehicle moves.
What matters is the driving period: the driving time you build up from the end of your last break or rest until the next one. It can be continuous or broken; you don’t have to drive 4.5 hours non-stop for the rule to bite.
So 2 hours driving, then an hour loading, then another 2 hours 30 minutes driving is still 4 hours 30 minutes of accumulated driving. The loading doesn’t count as driving, but it doesn’t reset the driving clock either. Before you drive on, you need a qualifying break.
This is why infringements catch operators out. A driver who has been stopping all morning may feel well rested, but if those stops were other work rather than a qualifying break, the driving clock just keeps carrying forward.
For this rule, a break is a period when you are doing no driving and no other work, used only to rest. If you are working, it isn’t a break, however tired you are or however still the vehicle is.
Does not count as a break:
Can count as a break:
The honest test is whether the time is yours. A break may be spent in the cab if you are genuinely off duty. The issue is not where you are, but whether you are free from driving and other work. The moment a duty pulls you back, even briefly, the break stops.
Getting the break right is only half the job. It also has to be recorded correctly.. Depending on the unit, a tachograph may default to a particular mode when the vehicle stops depending on the predetermined setting, so the driver has to select the correct one: the bed symbol for breaks and rest, crossed hammers for other work and a diagonal line though a square box for period of availability.
A wrong mode quietly distorts the record. Forty-five minutes logged as rest is no help if the driver was actually working, and a genuine break logged as other work can create an avoidable infringement that then has to be explained and corrected.
You don’t have to stop for a full 45 minutes at once. The rules let you break it into two parts so it fits the rhythm of the day: a first break of at least 15 minutes, then a second of at least 30 minutes, both taken across the same 4.5-hour driving period.
It has to be 15 first, then 30. A 30-minute break followed later by a 15-minute one is not a valid split - the longer part must come second. Get the order wrong and the tachograph analysis shows an unbroken driving period over 4.5 hours, which is an infringement even though you stopped for 45 minutes in total.
It is easier to see the rule in action. In each case, ‘drive’ means accumulated driving time.
A full 45-minute break wipes the slate clean. So does the 30-minute second part of a valid split, once the first 15-minute part is in the bank. After either, your accumulated driving time returns to zero and you can drive for up to another 4.5 hours.
A break that doesn’t meet the rule doesn’t reset anything. These commonly stop the vehicle but do not start a fresh 4.5-hour period:
A period of availability (POA) is waiting time you know about in advance; a booked loading slot, a ferry queue, or time spent as crew while another driver drives. A POA is not a break or a rest, and it does not count towards working time.
Multi-manning is the exception worth knowing. Article 7 lets a driver in a double-manned crew take their 45-minute break in the moving vehicle while the other drives, provided they are not helping with the driving (no navigating or map-reading). The tachograph may record this as availability, but DVSA examiners treat the first 45 minutes of second-driver POA as a break.
Don’t stretch that into a general rule. On single-manned work, or where the driver has to stay ready and involved with the job, waiting time is not automatically a break. Check whether it genuinely meets the definition before relying on it.
The 45-minute break is one piece of the wider drivers’ hours picture. It governs how long you drive between breaks; separate limits govern how long you drive in a day, a week and a fortnight, and how much rest you take. In summary:
For the full picture of how these fit together, see our pillar guide. For the details on rest, see our articles on daily rest and weekly rest.
Don’t confuse the drivers’ hours break with the break you’re owed under the Road Transport (Working Time) Regulations 2005. They run side by side and you have to satisfy both.
Working time counts driving plus other work, and the working-time break is triggered by hours worked, not hours driven:
In mostly-driving work, a proper 45-minute drivers’ hours break usually satisfies both. The reverse isn’t true. A 15-minute working-time break does nothing for your 4.5-hour driving limit, so a good plan watches both clocks at once.
Only in genuinely exceptional circumstances, and only as far as you must. The rules let a driver depart from the break and driving limits to the extent needed to reach a safe place to stop, provided road safety isn’t put at risk. Examples include an unforeseen road closure, a collision ahead, or severe weather with nowhere safe to pull in.
If you use it, you must record why: note the reason on a printout or as a manual entry so the record explains the overrun at the latest on arrival at a suitable stopping place. This is for the genuinely unexpected, not for rescuing a tight schedule. Repeated ‘exceptional’ overruns are exactly what DVSA and traffic commissioners read as a sign of poor planning.
If a vehicle runs under the GB domestic rules rather than the assimilated rules, the breaks requirement is different and there is no 4.5-hour / 45-minute rule in the same form.
As a rough guide, GB domestic drivers must record a break of at least 30 minutes after 5.5 hours of driving. If you’re not sure which set of rules a vehicle falls under, settle that first. See our guide to which rules apply.
The rule is simple to state and easy to fail in practice. Multi-drop rounds, construction site work, waste collection, removals, coach work and yard-based starts all create gaps that look like breaks but are often other work. Operators and transport managers should check that:
This isn’t only the driver’s responsibility. The Regulation requires the transport undertaking to organise drivers’ work so the rules can be met, to give proper instructions, and to make regular checks. Break infringements are a management issue as much as a driver one, which is also why they’re best caught in the data, early.
Most break infringements aren’t deliberate: a split taken in the wrong order, a working stop logged as a break, or a driving period that crept a few minutes over 4.5 hours on a busy day. They all show up in the tachograph data.
That is the work we take off your desk. Tacho Agent analyses your tachograph data, flags break and driving infringements clearly, shows whether a split was valid, and highlights patterns recurring across drivers or contracts so the 4.5-hour rule is something your operation runs to, rather than something you find out about at the roadside.
This article is provided for general guidance only and reflects our understanding of the rules as they apply in Great Britain as at the date shown on this page. It is not legal advice and should not be relied on as a substitute for advice tailored to your specific operation.
Drivers' hours, tachograph, working time and operator licensing rules are detailed and change over time, and some requirements differ in Northern Ireland and for international journeys. Always check the current guidance on GOV.UK and the underlying legislation on legislation.gov.uk, and consult your transport manager or a qualified compliance professional before acting.
To the fullest extent permitted by law, Tacho Agent Ltd accepts no liability for any loss arising from action taken, or not taken, in reliance on this article. Nothing here excludes or limits any liability that cannot lawfully be excluded, including for death or personal injury caused by negligence or for fraud. Use of this article is also governed by our Terms of Use.
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