Yump is a term used in rallying for a bump or crest where the car leaves the ground.

Yump was derived from the way the Scandinavian rally drivers of the 1960s pronounced 'jump', and passed into common usage among rally drivers.

Yaw is the technical term for the deviation of a vehicle from the straight-ahead position.

The term is used in vehicle dynamics, the study of roadholding and handling. It is also used in aerodynamics, particularly in the study of the stability of a car in a crosswind.

Yaw rate is the rate of turn of the vehicle about its vertical axis.

Compare pitch and roll.