Anti-lock brakes (ABS) have been common long enough that most drivers consider it an essential safety feature and have experienced its effects. On dry pavement, the brake pedal hums as the vehicle comes to a quick and controlled stop. On wet pavement, it vibrates a bit more but again brings the vehicle to a quick and controlled stop. Yet in winter conditions, it can often seem like it’s working against you. There are at least two situations where ABS can adversely affect winter braking performance.