What happens if a driver operates both a bus and truck for part of each day or each week?

A driver will be subject to the limits on driving time applicable to the commercial motor vehicle (CMV) the driver is driving (11 hours for a property-carrying CMV, 10 hours for a passenger CMV), and will be required to meet the off-duty requirements applicable to the type of CMV the driver will drive immediately after that off-duty period (10 hours if the next assignment is in a property-carrying CMV, 8 hours if it is in a passenger CMV). For example, if a bus driver completes 8 hours off-duty for the motorcoach company, the driver must remain off-duty for another 2 hours before driving for the trucking company. After completing 10 consecutive hours off-duty, the driver may drive for 11 hours for the trucking company. Following 8 consecutive hours off-duty, the driver may then drive for the bus company.