A Pennsylvania driver operates a bus designed for 18 people including the driver, but only 10 riders are on today's trip. Which statement is correct?

1. The driver needs the Passenger endorsement because the vehicle is designed for 16 or more including the driver
2. The driver does not need the endorsement because fewer than 16 riders are aboard today
3. The driver needs the endorsement only if the bus crosses a state line
4. The driver needs only a Tank endorsement because the bus is below capacity