Hours of Service
A driver may not drive beyond the 14th hour after coming on-duty following 10 hours off-duty. This means, once the driver begins an on-duty period of any kind, the 14-hour clock has begun.
Example:
If a driver starts an on-duty status at 0600, the driver would have to stop driving at 2000 (14-hours later).
Once the 14-hours are reached, the driver may no longer drive but can continue to work. The driver must take a 10-hour consecutive break before resuming driving.
The only exception to this rule is the possible use of a split sleeper berth consisting of 2-hours or more. This extension may only be used one time during the 14-hour period.
Example:
Driver starts an on-duty status at 0600; during the 14-hour period the driver also took a 5-hour sleeper berth break. Therefore, instead of stopping driving at 2000, because of the use of the sleeper berth, the driver may now drive until 0100.