The following driving limits, imposed by the U.S. and Canada for safety reasons, could impact your transit times:
Canada – 13 hours driving within a day or 14 hours of on-duty time within a day. Drivers are required to take at least 10 hours off-duty time within a day. Two hours of the total 10 hours can be taken throughout the day, in blocks of no less than 30 minutes.
U.S.A – Drive a maximum of 11 hours in a consecutive on-duty window of 14 hours, with a 30-minute break at some point in the trip. Thereafter, drivers must be off duty for 10 consecutive hours. They are also not allowed to work more than 70 hours in eight days.