My feeling is that almost every emergency situation starts with a foot on the brakes anyway. So once ABS kicks in, the driver then has a natural tendency to try and steer the vehicle out of trouble. I guess ESP is beneficial in the Moose avoidance maneuver but that's about the only type of maneuver in which I find that ESP would work better than plain old braking and steering.

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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman