What should a bus operator do if he arrives at the last stop and has discharged the last customer?

When a bus operator has arrived at the last stop and has discharged the last customer, the appropriate action is to turn off the engine. This step is important for several reasons. First, it ensures the safety and security of the bus after the service for the day has concluded. Turning off the engine also reduces unnecessary fuel consumption and emissions, promoting environmentally friendly practices. Furthermore, it signals that the bus is no longer in service, which can help prevent accidental movement of the vehicle.

The other options do not align with standard operating procedures following the completion of a route. Driving around for another loop is unnecessary and could contribute to additional costs and safety risks. Waiting for a next scheduled customer is impractical if there are none expected, as the service has officially ended. Reporting to the depot is indeed a necessary step, but it typically occurs after ensuring the vehicle is properly secured and the engine is turned off. Turning off the engine is, therefore, the immediate and correct action following the discharge of the last customer.