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Brake checking is the practice of hitting the brakes to make a tailgater increase their following distance. Drivers often use brake checking as a kind of counter-measure against aggressive drivers or as a means of retaliation. Regardless of the reason, brake checking is aggressive driving, and not only endangers the tailgater, but other motorists as well. It can potentially trigger a pileup crash, especially in wet or foggy conditions. The tailgater could be a distracted driver with their family in the car. Perhaps the driver is a mother dealing with.