A method of controlling traction in a vehicle having at least one
non-driven wheel speed sensor. Actual vehicle acceleration and a wheel
speed difference are detected. At least one of the actual vehicle
acceleration and the wheel speed difference is compared to at least one
of a predetermined vehicle acceleration and a predetermined wheel speed
difference to detect vehicle wheel slip. A wheel torque is reduced in
response to detected wheel slip. The foregoing method allows traction
control to be installed in many types of vehicles, including vehicles
without ABS. More than one type of wheel slip detection can be
implemented, and various types of wheel slip can be detected.