When you are performing a VBOX Touch deceleration test with a VBOX Brake Pedal Trigger, VBOX Touch will create and display a 'Corrected Distance' channel in the results. This corrected brake trigger distance accounts for the trigger not being activated at exactly the same speed on each run.
VBOX Touch corrects the brake distances to the nearest 10 km/h. In the real world, it is very difficult for test drivers to hit the brakes at a set speed of 0.1 km/h repeatedly. The corrected trigger distance calculation compensates for the over, or under-speed application and normalises the result to a set start speed value maintaining the original initial braking reaction time as if the brakes had been applied at that exact set speed.