In any period of 7 days (168 hours) a driver must not work for more than a maximum of 36 hours of long/night work time.

Breach: Driver has exceeded 36 Long/Night Hours within a 7 day (168 hour) period

long/night work time is:
• any work time between midnight and 6am (according to the time zone of the driver’s base), or
• any work time greater than 12 hours in a 24-hour period