Other than my current truck (89 7.3) the other vehicle I had was a 1991 Ranger with Ford's "RABS" system. It _did_ do a very good job of avoiding the tendency that pickups have, when unloaded or lightly loaded, if you end up in a panic stop, to have the back wheels lock up and the rear of the truck start coming around on you sideways. It's not the same as modern 4 wheel ABS, but I would not say it's useless. I sort of like the way it does keep the truck stable side-to-side, but gives you full control, with no interference, on the front brakes, which do the bulk of the stopping in any event.