Vehicle inspection, vehicle control, and shifting
This domain tests whether you can confirm a passenger vehicle is safe to move, control it smoothly, and shift without upsetting passengers or losing traction. In Oklahoma, the passenger endorsement exam expects bus-specific judgment, not just basic car driving.
Pre-move checks
Adjust the seat and mirrors, fasten the belt, and verify the transmission range and parking brake before moving. Check gauges after start-up: oil pressure, coolant temperature, air pressure if equipped, and warning lamps. Know the height and length of the bus; clearance errors are control errors. Release the parking brake fully and confirm the brake-warning light goes out.
Smooth control and shifting
Start smoothly and accelerate progressively. Use the lowest gear that pulls the load without lugging; shift before a grade, not on it. On a downgrade, select a lower gear before the descent and use engine braking; do not coast in neutral. In a manual, do not ride the clutch or skip gears under a heavy passenger load. In an automatic, use a lower range on long grades. Do not shift while crossing railroad tracks, in an intersection, or during a turn; keep both hands on the wheel through the maneuver.
Worked example
A loaded 40-foot bus approaches a long downgrade at 45 mph. The correct response is to slow before the crest, select a lower gear, and let engine braking hold speed, using short brake applications only if needed. Waiting until the descent to downshift risks overspeed and brake fade.
Traps
Riding the clutch, coasting in neutral, leaving the parking brake partly set, and shifting mid-crossing are common mark-losers. Smoothness matters because standing passengers can fall.