Drivers' hours are a planning constraint, not a driver problem

A tour goes up on the board on Thursday afternoon. Load in Gothenburg early, three drops down the west coast, a fourth outside Malmö, back for a fifth in the evening. Somebody adds the driving legs up and gets about eleven hours behind the wheel. Nobody says anything, because the plan looks like a normal day’s work and because the number that would have stopped it — nine — was never written anywhere on the board.

On Tuesday the driver runs out of hours south of Halmstad, the fifth drop fails, and there is a conversation about whether the driver managed their day badly.

They did not. The tour was illegal on Thursday. It was illegal in the way an overloaded pallet is overloaded before it is lifted: a property of the plan, decidable with arithmetic, hours before anybody turned a key.

This is a description of what the rules say, not legal advice. Everything below is taken from the consolidated text of Regulation (EC) No 561/2006 in the version of 31 December 2024 — the one incorporating the Mobility Package amendments made by Regulation (EU) 2020/1054.

The four numbers that bound a day

Nine hours of driving. Article 6(1): “The daily driving time shall not exceed nine hours.” It may be extended “to at most 10 hours not more than twice during the week” — twice, and the two are spent, so a Monday and Tuesday of ten hours leave nine as the ceiling for the rest of the week.

Forty-five minutes after four and a half. Article 7: “After a driving period of four and a half hours a driver shall take an uninterrupted break of not less than 45 minutes, unless he takes a rest period.” It can be split, but only one way: “a break of at least 15 minutes followed by a break of at least 30 minutes”, in that order. And a break is not a light job — Article 4 defines it as a period during which the driver “may not carry out any driving or any other work and which is used exclusively for recuperation”. Twenty minutes spent strapping a load is not part of a break.

Eleven hours of daily rest. A regular daily rest period is “any period of rest of at least 11 hours”, and it may alternatively be split into two periods, “the first of which must be an uninterrupted period of at least 3 hours and the second an uninterrupted period of at least nine hours”. A reduced daily rest is at least nine hours but less than 11 — and Article 8(4) allows “at most three reduced daily rest periods between any two weekly rest periods”.

Twenty-four hours from the last rest. Not a clock that starts at the depot gate. Article 8(2): within each period of 24 hours after the end of the previous daily or weekly rest period, a new daily rest period must have been taken. Take eleven hours ending at 05:00 and the whole of that day — driving, loading, waiting, the drive home — has to fit in the nineteen hours before 05:00 the next morning. A late finish does not merely make for a tired driver; it moves tomorrow’s latest possible finish with it.

The week and the fortnight

Driving time is capped at 56 hours in a week (Article 6(2)) and 90 hours across “any two consecutive weeks” (Article 6(3)). The second of those is the one that quietly forbids a good week followed by another good week: 56 and 56 is 112, so a 56-hour week obliges a 34-hour one after it.

Weekly rest works the same way. In any two consecutive weeks a driver takes either two regular weekly rest periods, or one regular and one reduced weekly rest period “of at least 24 hours” — a regular one being at least 45 hours. Any reduction is compensated “by an equivalent period of rest taken en bloc before the end of the third week following the week in question”, and Article 8 requires that compensating rest to be attached to another rest period of at least nine hours. A reduced weekend is therefore a debt with a due date, not a saving.

The timing rule again refuses calendar weeks: “A weekly rest period shall start no later than at the end of six 24-hour periods from the end of the previous weekly rest period.” Two further constraints belong to the same conversation: a regular weekly rest “shall not be taken in a vehicle” but in “suitable gender-friendly accommodation” (Article 8(8)), and work must be organised so drivers can return to the operational centre or their home “within each period of four consecutive weeks” (Article 8(8a)).

Every one of those is knowable on Thursday

None of it needs a tachograph to compute. It needs the legs’ driving times, which a routing engine produces, and the driver’s recent history, which the operation already has. The limits are arithmetic over both.

It gets discovered late because the two halves live in different places. Planning software knows the tour; the hours live in the driver’s card, checked after the fact by whoever downloads it. So the check happens where the evidence is, which is a week too late, instead of where the decision is.

The honest trade-off is that driving time is not the whole day, and a system that only models driving will still build days that do not work. Loading, waiting at a dock, walk-around checks and paperwork are other work — not driving, not break. They consume the 24-hour period, and they are governed separately by Directive 2002/15/EC, which Article 6(2) refuses to let you exceed. A plan that fits inside nine hours of driving and still has the driver on duty for fifteen is a different problem, and the driving limits will not catch it.

Real days also refuse to match estimates. That is why Article 12 exists: a driver may depart from the driving and rest rules “to the extent necessary to ensure the safety of persons, of the vehicle or its load” to reach a suitable stopping place, and in exceptional circumstances may exceed the daily and weekly driving time by up to one hour to reach the operational centre or home for a weekly rest — or by up to two hours, if an uninterrupted 30-minute break was taken immediately beforehand, to reach it for a regular weekly rest. The reason must be recorded by hand on arrival, and any extension is compensated by an equivalent rest en bloc by the end of the third following week. It is not an hour of planning slack.

One scope change matters if you run vans. Since 1 July 2026, Regulation 561/2006 applies to the carriage “of goods in international transport operations or in cabotage operations, where the maximum permissible mass of the vehicle, including any trailer, or semi-trailer, exceeds 2,5 tonnes”. Goods work above 3,5 tonnes was always in scope; a 3.5-tonne van running abroad is now inside the regime too, and so — by way of Regulation (EU) No 165/2014 — is the tachograph obligation. Fleets that bought vans partly to stay outside these rules are least likely to have noticed.

Planning with hours as a first-class constraint

In practice it means three things. The tour is costed in hours as well as kilometres, so an eleven-hour drive is refused at the point of assignment rather than discovered at the roadside. The driver’s position in their own week — hours driven, when the last rest ended, how many reductions are already spent — is visible to whoever is dragging the booking onto the truck. And the plan names which vehicle and which driver, because both the 24-hour clock and the fortnightly total belong to a person, not to a route.

navichain treats drivers’ hours as one of the rules the system applies where the work happens rather than on a checklist: the platform page lists Regulation 561/2006 among the 26 regulations enforced at the point of work, and routes are judged against real limits — driver hours, vehicle class, delivery windows — with what will not fit flagged before a booking is committed to a truck. Expired roadworthiness or tachograph calibration stops a run outright. None of that makes a long week shorter. It moves the moment you find out from Tuesday afternoon back to Thursday, while it is still a plan and still free to change.