What endorsement does a CDL driver need to operate a passenger vehicle?

The P endorsement (Passenger) is required for any driver operating a vehicle designed to transport 16 or more passengers (including the driver). To obtain it: pass the passenger transport written knowledge test; pass a road skills test in a representative passenger vehicle (the test must be done in a vehicle of the same class and type as the one you will drive). For school bus drivers, an additional S endorsement is required on top of the P endorsement. Both endorsements have separate knowledge tests. The skills test in a passenger vehicle is essentially the same as the CDL skills test but in a different vehicle type, which means buses' handling characteristics are evaluated on the road test.