A form of drag racing that is meant to eliminate vehicle advantage and base success solely upon the driver. Bracket racing, or E.T. Racing is often considered grass roots racing, because big budgets are not necessary.
Before the race, each driver sets a dial-in time, which is basically a guess on the quarter-mile time. The car with the slower dial-in gets a head start equal to his dial-in minus his opponent's dial-in. The idea is that if both drivers guess their times exactly right, both will cross the finish line at the same time.
So, why not just set a really slow dial-in and get a big head start? If you run faster than your dial-in, it is called breaking out, and you automatically lose that race. That's part of what makes it exciting. Set your dial-in too high, you break out and lose. Set your dial-in too low, and you don't get enough of a head start.
This system makes it so that slow cars can compete with fast cars. It levels the playing field so-to-speak.