The assimilated EU drivers’ hours rules cover most HGV work, but some operations fall under GB domestic rules instead. The two regimes are different, and mixing them up is a common source of infringements.
Domestic rules generally apply to goods vehicles outside the assimilated or AETR rules, including many vehicles exempt from them. But some activities exempt from the assimilated regime are also exempt from GB domestic rules, such as Armed Forces, police and fire-brigade vehicles, wholly off-road driving and private non-work driving. The vehicle, journey and exemption conditions decide which regime applies.
Under GB domestic rules:
There is no weekly driving limit or specified break period in the GB domestic drivers’ hours rules themselves. Employers must still provide adequate rest under the Working Time Regulations, and exemptions from the 11-hour duty limit exist for particular days, patterns and vehicle uses. Check the DVSA domestic guidance rather than applying the headline number to every case.
Written weekly records are required only in the circumstances set out in DVSA guidance, including when a goods vehicle requiring an operator licence is driven for more than four hours that day. Other exemptions apply. A compliant tachograph may be used to record domestic activity when the applicable conditions are met. Operators should check and sign required weekly record sheets.
A driver who mixes the two regimes must comply with both record-keeping systems. DVSA treats GB domestic driving as other work under the assimilated rules, rather than simply adding it to assimilated driving time; assimilated work also counts toward domestic limits. Read the mixed-driving guidance before designing such shifts.
Two questions must be asked separately. First, is the vehicle and journey subject to the assimilated or AETR drivers’ hours framework? Second, if not, do the GB domestic rules apply? DVSA’s domestic guide says they apply to most goods vehicles exempt from the assimilated framework, but then lists specific exemptions from the domestic rules themselves. It is not accurate to say that every exempt vehicle follows domestic rules or that every domestic-rule driver must keep a paper logbook.
An agricultural vehicle may be exempt from assimilated rules only while the activity and distance conditions hold. A different job later in the week can have different rules. Equally, a police vehicle exempt from the assimilated rules is also listed among exemptions from domestic drivers’ hours. Write down the reason for the claimed exemption and check the relevant DVSA section; do not rely on a phrase such as “utility work” without its conditions.
Under the GB domestic regime, the daily maximum is 10 hours driving and, usually, 11 hours duty in a working day. Duty includes more than time at the wheel. Loading, vehicle checks and other work use up the available duty time even if they leave plenty of driving time. An operator who tracks only the 10-hour number can still exceed the 11-hour duty limit.
The duty rule has exceptions. DVSA says there is no 11-hour duty limit on a day when the driver does not drive, and a driver who does not drive for more than four hours on each day of the week can be exempt from the daily duty limit for that whole week. Certain light vehicle activities have further duty exemptions while retaining the driving limit. The working week for these purposes runs Monday to Sunday. These exceptions are specific; ask whether the precise pattern qualifies before building an 11-hour-plus shift around them.
Driving for domestic-rule purposes can include time in control of a stationary vehicle with the engine running, even for a short period. DVSA also treats some off-road driving in agricultural, quarrying, forestry, building or civil-engineering work as duty rather than driving. That is another reason a planner should not assume a tachograph mode alone answers the question. The guidance explains how the activity is classified.
The GB domestic drivers’ hours rules have no specified statutory break and rest periods in the same pattern as the assimilated rules. This is not permission to run a driver from start to finish without a proper pause. Under the Working Time Regulations 1998, employers must ensure adequate rest, including adequate breaks. The adequacy of rest depends on fatigue risks and the individual’s circumstances. A vehicle collecting waste or working on construction sites can have substantial physical work between stretches of driving; schedule for the work as well as the road time.
The 48-hour average weekly working-time rule may apply under the 1998 Regulations to a domestic-rule driver, with a possible individual opt-out. That differs from the sector-specific 2005 Regulations for assimilated-rule mobile workers, which do not allow an individual 48-hour opt-out. Check which working-time regime applies before importing a policy from one part of the fleet to another.
For vehicles carrying goods that require an operator licence, a driver who drives for more than four hours that day under domestic rules generally must keep a written record of hours on a weekly record sheet. The operator is expected to check and sign it. DVSA provides a flowchart for exemptions, and a compliant tachograph can be used instead under defined conditions. Keep the relevant weekly records organised by driver, not tucked into different cab pockets.
If a tachograph is used as the legal domestic record, the equipment’s fitment and use rules also apply. Conversely, having an unused tachograph fitted in a domestic-rule vehicle does not automatically turn the whole operation into assimilated driving. DVSA gives separate calibration and sealing advice for fitted equipment. Follow the actual use and record-keeping requirements, not assumptions based on whether a box is installed.
Mixed work is not solved by adding every driving hour into one EU total. DVSA’s mixed-driving section says GB domestic driving is recorded as other work for the assimilated rules. Assimilated driving and duty count toward the domestic limits as stated in that guidance. On a day with both types of work, records may be needed under both systems. A driver cannot turn an earlier domestic duty period into a break or rest under assimilated rules.
A practical example is a driver who performs an exempt local utility task in the morning and a general haulage trip later. The local task cannot simply be ignored because it happened under a different regime. Before assigning the second trip, check the first activity’s classification, accumulated domestic duty and driving, required records and the rest needed under the assimilated rules. These details affect whether the shift fits, and there is no safe single arithmetic shortcut for every mixed shift.
This is a GB summary. Northern Ireland has separate domestic rules; do not apply this article unchanged to an NI-based operation. DVSA’s full domestic guide is the reference for exemptions, duty-limit exceptions and the record-keeping flowchart.