Thanks Vic,

Class I,II, III - use plugging for normal braking, do not use park brake or neutral unless special circumstances warrant it.

Class IV, V - use inching/brake pedal for stacking or racking, do not use park brake or neutral unless special circumstances warrant it.

Class I,II, III- Park brakes are usually one small drum or disc and go out of adjustment quickly if used as a normal brake

Class IV, V- Park brakes are usually the trailing shoe of the service brakes and thus will wear out very quickly if operator forgets to release the park brake before moving

Class I,II, III- Should not be used on ramps of more than 5% grade because of the poor braking system unless the manufacturer recommends it is safe to exceed 5% grade

Hope this is a start