Where a driver accompanies a vehicle that is being transported by ferry or train, the daily rest requirements are more flexible. A regular daily rest period may be interrupted no more than twice, but the total interruption must not exceed 1 hour in total. This allows for a vehicle to be driven on to a ferry and off again at the end of the crossing. Where the rest period is interrupted in this way, the total accumulated rest period must still be 11 hours. A bunk or couchette must be available during the rest period.