A motor carrier must not permit or require a driver to drive a CMV after a total of : 60 hours on duty in 7 consecutive days or; 70 hours on duty in 8 consecutive days. If the driver works more than one job of any kind, that time must also be included as On Duty Time. Michigan law allows a driver that is engaged in intrastate construction related activities to be on duty 70 hours in 7 days or 80 hours in 8 days, as well as be on duty up to 16 hours in a day and drive not more than 12 hours in a day.