Driving the carrier’s truck in off-duty time for personal use does not count toward the drivers’ maximum daily hours. Your driver may use the truck to go get a bite to eat. Maybe they check into their hotel, then drive over to the grocery store to pick up lunch items for the next day.
Driving can be considered personal use as long as it follows these requirements:
You can record personal use at the bottom of the daily log form. Note the odometer reading at the start and end of the trip for personal use.