HGV drivers in the UK operate under two separate but connected sets of rules: EC drivers’ hours regulations (Regulation EC No 561/2006, retained in UK law post-Brexit) and the Road Transport (Working Time) Regulations 2005. Getting either wrong can cost you your licence, your operator a public inquiry, and everyone involved a significant fine.
Daily Driving Limits: The 9-Hour Rule and When You Can Extend It
The starting point for every HGV driver is the 9-hour daily driving limit. This is the maximum you can spend behind the wheel within a single 24-hour period, measured from the moment you start driving after any daily or weekly rest period.
The regulation does allow two extensions per working week. You can increase your daily driving to 10 hours, but only twice in any fixed week (Monday 00:00 to Sunday 23:59). That flexibility is not a routine entitlement. It is a tool for managing time-sensitive jobs or unavoidable delays, and it has to be recorded accurately on your tachograph.
Worked example: A driver starts at 06:00 on Monday. Their normal ceiling is 9 hours driving, meaning they would need to stop driving at 15:00, accounting for the mandatory 45-minute break they must take by 10:30. If a time-critical delivery requires extra time, they can extend to 10 hours on that Monday. They use their second extension on Thursday. From Friday onwards, 9 hours is the hard ceiling for the rest of that week.
Two points catch drivers out here. First, the 10-hour extension applies to the current fixed week only. Using both extensions by Wednesday does not borrow against next week’s allowance. Second, any time driving over 4.5 hours without a proper break is an infringement regardless of whether you have used your extension or not.
Mandatory Breaks: How the 4.5-Hour Rule Works in Practice
After 4.5 hours of driving, you must take a break of at least 45 minutes before you drive again. That is not 4.5 hours from your shift start; it is 4.5 hours of actual driving time. Other work, loading, and administrative tasks do not count towards the 4.5-hour driving accumulation, though they do count towards your total working time under the Working Time Regulations.
The break can be taken in two parts. If you split it, the first part must be at least 15 minutes and the second must be at least 30 minutes. The order is fixed: 15 minutes first, 30 minutes second. Taking 30 minutes first and 15 minutes second does not satisfy the legal requirement.
Worked example: A driver leaves the depot at 07:00. By 09:00 they have covered two hours of driving. They pull over for a 15-minute stop. They continue and by 11:30 have accumulated another 2.5 hours of driving, giving 4.5 hours total. They must now take a 30-minute break before driving again. By 12:00 their break obligations for that 4.5-hour block are fully met and the driving clock resets.
One practical trap: ‘other work’ at a collection point does not count as a break. If a driver arrives at a depot after 3 hours of driving, then spends 45 minutes on the loading bay, their driving clock is still showing 3 hours when they leave. The tachograph must be switched to the correct mode throughout.
Breaks must be recorded using the rest/break mode on your digital tachograph. Any period logged as ‘other work’ during what should be a break period creates an infringement, even if the driver was physically at rest.
Daily and Weekly Rest: Regular, Reduced, and Compensated
Daily rest
At the end of a working period, you must take a daily rest before you can start driving again. There are two types.
A regular daily rest is a continuous, uninterrupted period of at least 11 hours. This is the standard requirement and should be the default for most drivers on most days.
A reduced daily rest allows you to cut that down to a minimum of 9 consecutive hours. You can take reduced daily rest a maximum of three times between any two weekly rest periods. There is no requirement to compensate for a reduced daily rest; the 9 hours is the minimum and nothing extra needs to be added back.
Worked example: A driver finishes at 22:30 on Tuesday and needs to start early on Wednesday. A regular 11-hour rest would require a 09:30 start on Wednesday. With a reduced daily rest of 9 hours, they can restart at 07:30. That is their second reduced daily rest that week. They can take one more before their weekly rest.
Weekly rest
The weekly rest requirement looks at any fixed week (Monday 00:00 to Sunday 23:59). Over any two consecutive weeks, you must take at least one of these combinations:
- Two regular weekly rests of at least 45 hours each, or
- One regular weekly rest of at least 45 hours and one reduced weekly rest of at least 24 hours.
If you take a reduced weekly rest of 24 hours, the shortfall of 21 hours (45 minus 24) must be compensated. You add those 21 hours to a rest period of at least 9 hours, and this compensation must be taken before the end of the third week following the week in which the reduction occurred.
The weekly rest period must begin no later than the end of six consecutive 24-hour periods from the end of the last weekly rest period.
| Rest type | Minimum duration | Frequency allowed |
|---|---|---|
| Regular daily rest | 11 hours | Every day |
| Reduced daily rest | 9 hours | Max 3 times between weekly rests |
| Regular weekly rest | 45 hours | At least once per two weeks |
| Reduced weekly rest | 24 hours | Max once per two weeks, shortfall compensated |
Ferry and train crossings
A ferry or train crossing can count towards a daily or weekly rest period if you have access to a sleeper cabin or bunk, and if the rest is only interrupted a maximum of twice, with total interruptions not exceeding one hour. This allows drivers on international runs to combine time on a crossing with their required rest, provided the accommodation and interruption conditions are met.
Weekly and Fortnightly Limits: The 56-Hour Cap and the Rolling 90-Hour Rule
The weekly limit
In any single fixed week, you cannot drive for more than 56 hours. That ceiling applies regardless of how many days you work or how early you started. Once you hit 56 hours, no further driving is permitted until the following Monday.
The 90-hour fortnightly limit
Alongside the weekly cap, there is a fortnightly limit of 90 hours. This is a rolling calculation: at any point, the total of your current week’s driving plus the previous week’s driving must not exceed 90 hours.
This is distinct from simply doubling the weekly limit. The rolling nature means a heavy week directly reduces what you are permitted in the week that follows.
Worked example over three weeks:
- Week 1: The driver clocks 52 hours. That is within the 56-hour weekly cap.
- Week 2: The two-week rolling total caps at 90 hours. With 52 hours already driven in Week 1, the maximum for Week 2 is 38 hours (90 minus 52). The driver plans carefully and drives 38 hours.
- Week 3: Week 1 falls out of the rolling window. The new two-week period is Week 2 (38 hours) and Week 3. Maximum for Week 3 is now 52 hours (90 minus 38).
Transport managers tracking multiple drivers need to run this calculation continuously, not just at week end. A driver who drives 50 hours in Week 1 and sets off on a full week in Week 2 is already in breach before the week is out. Check out our HGV drivers hours calculator.
Weekly limits at a glance
| Limit type | Maximum |
|---|---|
| Daily driving | 9 hours (extendable to 10 hours, max twice per week) |
| Weekly driving | 56 hours |
| Fortnightly driving (rolling) | 90 hours over any two consecutive weeks |
| Break after driving | 45 minutes after 4.5 hours of driving |
Tachograph Obligations and the 56-Day Record Requirement
Your tachograph is your legal record of compliance. Every minute of driving, other work, availability, and rest must be recorded in the correct mode. Errors and omissions are infringements in themselves, separate from any hours violation.
Digital tachographs record four activity types:
- Driving (activates automatically when the vehicle moves)
- Other work (vehicle checks, loading, admin, cleaning)
- Period of availability (waiting on standby, travelling as a second driver)
- Rest or break (breaks and all rest periods)
Switching between modes correctly is non-negotiable. A 45-minute period spent at a delivery point logged as ‘other work’ rather than ‘rest’ means your tachograph shows no legal break at that point. The fact that you were physically resting is irrelevant; the record is what DVSA will examine.
Driver cards must be downloaded at least every 28 days. Vehicle unit data must be downloaded at least every 90 days. From 31 December 2024, drivers are required to carry 56 days of driving records during any journey, up from the previous 28-day requirement. This change brings the UK in line with EU Mobility Package standards and means a roadside check can now scrutinise nearly two full months of your driving history.
The practical consequence: any pattern of infringements that might previously have gone undetected in records older than 28 days is now fully visible at a roadside stop. Clean, consistent records across the full 56-day period are the only safe position.
The Cost of Getting It Wrong: DVSA Fines and Operator Consequences
DVSA enforcement officers do not limit their checks to what happened on the day of the stop. They can examine your tachograph records going back 56 days, and issue fixed penalty notices for each offence they find in the previous 28 days.
Since a rule change in March 2018, officers can issue fines of up to £300 per driver’s hours offence. Up to five penalties can be issued in a single roadside stop, creating a potential liability of £1,500 from one check. Serious cases can result in an immediate prohibition, which grounds the vehicle until the driver has taken the required rest.
Repeat offences or patterns of non-compliance can trigger a referral to the Traffic Commissioner. Outcomes from a Traffic Commissioner hearing include:
- Suspension or revocation of the driver’s vocational (HGV) licence
- A public inquiry into the operator’s licence
- Reduction in the number of vehicles the operator is authorised to run
- Suspension or revocation of the operator’s licence
No fleet can treat fines as an acceptable cost. The financial exposure from a single check, combined with the reputational and licence risk, makes full compliance the only defensible operating position.
Domestic Rules: When EC Regulations Do Not Apply
Not every HGV journey in the UK falls under the EC drivers’ hours rules. GB domestic drivers’ hours rules apply to certain vehicles and journeys that are exempt from EC regulations, including some agricultural, quarrying, and other specified sectors.
Under GB domestic rules, the daily driving limit is 10 hours. A break of 30 minutes must be taken after 5.5 hours of driving, and a break of 45 minutes must be taken after 8.5 hours. Weekly driving is capped at 56 hours, with a fortnightly limit of 90 hours. Not all of the detailed rest provisions from EC regulations apply under the domestic rules.
If any part of a journey falls under EC regulations, the EC rules govern the entire journey. Drivers who switch between exempt and non-exempt work within a single shift need to understand which set of rules applies and record accordingly.
Frequently Asked Questions
Can a driver exceed daily driving hours due to unavoidable delay?
Yes, in genuinely exceptional circumstances. If completing your driving is necessary to reach a safe stopping place, you can exceed the daily limit by enough to get there. This covers unforeseeable events: a sudden road closure, a major accident blocking the route, or severe weather that makes stopping dangerous. It does not cover predictable delays like rush-hour traffic or poor journey planning. Any extension must be recorded on your tachograph immediately with a clear written note explaining the reason. DVSA officers examine these notes closely.
Does waiting time at a delivery point count as a break?
Only if you record it correctly. Time spent waiting at a collection or delivery point counts as a break only if it is logged in the rest/break mode on your tachograph and you are under no obligation to respond to calls or instructions from your employer. If you are on standby and might be called upon, it is a period of availability, not rest. The practical test is whether you are genuinely free to rest without interruption.
What is the difference between a break and a rest period?
A break is a period taken during the working day to interrupt the 4.5-hour driving accumulation. It does not count towards daily or weekly rest. A rest period is a longer uninterrupted period during which the driver is completely off-duty. Daily rest periods (11 hours regular or 9 hours reduced) satisfy the rest requirement; breaks do not.
Do the EC hours rules apply to drivers travelling through the UK from the EU?
Yes. EC Regulation 561/2006 is retained in UK law and applies to all relevant journeys within Great Britain, regardless of where the driver started or where the vehicle is registered. EU-based drivers must comply with the same rules when operating in the UK.
Can a driver’s mate or co-driver rest in the cab while the vehicle is moving?
Yes, under multi-manning rules. When two drivers are in the cab, the driver who is not driving can take a rest period while the vehicle is in motion, provided they are in a sleeper berth or a suitable seat. The 9-hour daily rest rule can be split differently under multi-manning arrangements, but both drivers’ records must be maintained accurately throughout.
What happens if a driver card is lost or faulty?
The driver must still record their activities. Without a working driver card, the driver should produce a tachograph printout from the vehicle unit at the start and end of each day and record their activities manually on the back of the printout. Driving without a card in a vehicle fitted with a digital tachograph is an offence unless the card has been lost, stolen, or is malfunctioning and manual records are kept.
How does the 56-day record requirement affect owner-operators?
Owner-operators are subject to the same 56-day record-carrying requirement as employed drivers. If you operate your own vehicle, you are both the driver and the operator, which means you carry responsibility for both the driver records and the vehicle unit download obligations. Driver cards must be downloaded every 28 days, and vehicle unit data every 90 days. Gaps in either record will be visible during a roadside check.
