HGV Driving Hours: The UK Rules Explained for Small Operators
Driving hours are one of the most heavily enforced parts of HGV compliance — and one of the easiest places for a small operator to slip up. Get the daily limit wrong by 30 minutes and you've got a recordable infringement. Repeat that across a week and your OCRS score starts moving in the wrong direction.
This guide explains exactly how HGV driving hours work in the UK: which rules apply to you, what the limits actually are, and the mistakes that catch sole-trader operators most often.
General guidance, not legal advice. Drivers' hours rules vary by vehicle category, journey type, and operating conditions. Always check the specific rules that apply to your operation against current DVSA guidance.
Which Set of Rules Applies to You
Two different sets of rules cover HGV drivers in the UK:
- EU drivers' hours rules (retained as UK law post-Brexit) — apply to most goods vehicles over 3.5 tonnes used commercially
- GB domestic rules — apply to a narrower set of UK-only operations not covered by EU rules
Most owner-operators running standard haulage will be on EU rules. The DVSA guidance on EU rules sets out the full coverage. The short version: if you're driving a goods vehicle over 3.5t MAM on hire-and-reward work in Great Britain, you're almost certainly on EU rules.
GB domestic rules apply to specific cases like vehicles used by emergency services, vehicles within a 50km radius of base for certain non-commercial use, and a handful of other narrow categories. The GB domestic rules guidance spells out which operations qualify.
If you're not sure which set applies to a given driver or vehicle, default to EU rules and check the exemptions carefully. Wrongly classifying a journey as GB domestic when it's actually EU-rules is one of the more common DVSA findings at operator visits.
The rest of this guide covers EU rules — the framework most micro-operators are working under.
Daily Driving Limits
Under EU rules, a driver can drive for a maximum of 9 hours in any 24-hour period.
This can be extended to 10 hours, twice in any week. So in a normal week, you have 5 days at 9 hours plus 2 days at 10 hours — a maximum of 65 hours of pure driving time.
What counts as "driving time":
- Time the driver is at the wheel with the engine running, even if the vehicle is stationary in traffic
- Time spent moving the vehicle in a depot or yard if the tachograph is recording
What doesn't count as driving time (but counts elsewhere):
- Loading and unloading
- Waiting time at a customer site
- Vehicle checks, paperwork, fuelling
- Time as a second driver (counts as "other work" or "availability" depending on the situation)
Common mistake: drivers logging loading/unloading time as "driving" because the engine was running. That's wrong — and it inflates apparent driving time, triggering false-positive infringements.
Daily Working Time and the 15-Hour Day
Driving time is only one component of a working day. The wider rules cover total working time (often referred to as the "spread of duty"):
- Maximum daily duty period: 13 hours, extendable to 15 hours up to 3 times a week
- Minimum daily rest: 11 hours of consecutive rest in any 24-hour period
That's where "how many 15-hour days?" comes in. The answer: up to 3 in a fixed week. After a 15-hour day, the driver still needs at least 9 hours of rest before the next duty period (the reduced daily rest exception — see our HGV weekly rest periods guide for the full daily/weekly cycle).
Pushing 15-hour days every day isn't legal — and it isn't safe. The rules treat 13 hours as standard and 15 hours as the exception.
Breaks
After 4.5 hours of driving, a driver must take a break of at least 45 minutes.
The break can be split: a 15-minute break followed by a 30-minute break (in that order) within the 4.5-hour driving period counts as compliant. Reverse the order or split into different chunks and you've got an infringement.
During the break, the driver cannot:
- Drive
- Carry out other work for the operator
During the break, the driver can:
- Rest in the cab
- Eat, sleep, or take personal time
- Travel as a passenger
If the driver continues driving after the 45-minute break, the 4.5-hour clock resets — they have another 4.5 hours of driving before another break is due.
Common mistake: drivers taking three 15-minute breaks. Doesn't comply. The rules accept 15+30 (in order) or one continuous 45-minute break — nothing else.
Weekly Driving Limits
Two limits apply at weekly level:
- Maximum 56 hours of driving in any single week (Monday 00:00 to Sunday 24:00 in EU rules)
- Maximum 90 hours of driving in any 2-week period
The 90-hour rule means you can't follow a 56-hour week with another 56-hour week — you'd need to come down to 34 hours in the second week (since 56 + 34 = 90). Most operators average closer to 45-50 hours/week to stay safely inside both limits.
Weekly Rest Periods
After 6 consecutive 24-hour periods of duty, a driver must take a regular weekly rest of 45 hours.
This can be reduced to 24 hours once in any 2-week period — but the lost time has to be paid back as a single block within the next 3 weeks. See our HGV weekly rest periods guide for the full mechanics.
Common Compliance Failures
The 5 most frequently recorded infringements at DVSA roadside checks and operator visits, in our reading of published enforcement reports:
- Insufficient daily rest — taking 10 hours instead of 11, or splitting rest incorrectly
- Late breaks — running past the 4.5-hour mark before stopping
- Exceeding daily driving limit — usually by under an hour, but enough to record
- Tachograph data not downloaded in time — driver cards every 28 days, vehicle units every 90 days (see our tachograph downloads guide)
- Manual entry errors — gaps in tachograph data because manual entries were missed when changing vehicles
Each of these adds traffic points to your OCRS score. A pattern of any one of them is enough to trigger a DVSA operator premises visit.
How to Stay Compliant
For a sole-trader operator running 1-5 vehicles, three habits cover most of the risk:
- Download tachograph data on a schedule — set a calendar reminder for driver card downloads every 4 weeks and vehicle unit downloads every quarter. Don't wait until the legal limit.
- Spot-check the data — at least monthly, check your driver hours data for breaks of less than 45 minutes, daily rests under 11 hours, and weekly driving over 56 hours. Catching infringements early lets you correct behaviour before DVSA records the offence.
- Train on manual entries — when drivers swap vehicles, switch to a different mode (loading, training, holiday), or come on/off duty mid-day, the manual entry must be made on the tachograph. Missed manual entries create gaps that DVSA treats as infringements.
A simple O-licence compliance checklist review every quarter catches most of the risks before they become OCRS-recordable events. The named Transport Manager carries the day-to-day duty for this — see our guide on Transport Manager responsibilities for the full scope of the role.