This report described a field trial of an antilock brake system (ABS) installed on an off-highway log tractor operating on Vancouver Island, British Columbia. The trial was conducted between 1992 and 1994 by FERIC, and MacMillan Bloedel Limited. The objectives of the study were to increase overall braking capacity by utilizing the steering axle brakes, while addressing steering axle wheel lockup concerns, and to determine the overall effectiveness of ABS in an off-highway application.