At NHIS all timing is done at the timing loop at Station 12 (Exit of NASCAR turn 4). The in race position of cars is taken from this loop as well. If the race is red and/or black flagged your position is the position you held on the last completed lap recorded at the timing loop.

As far as the race finishing order at NHIS, that is done manually by the Starter at S/F.

Regarding SCCA using the transponder system to score the finishing position this could potentially be less accurate than the current manual system used at NHIS because there is no regulated position where transponders have to be located on a racecar. Transponder signals are recorded a few car lengths before crossing the timing loop. If your signal is stronger because of battery strength or the location on the car is less shielded your signal could possibly be seen electronically before the car in front of you in a door to door crossing of the loop. Also if you locate the transponder at the rear of the car it will be sensed later than if it where on the nose.

At NHIS the use of transponders is for timing and mid race car position, race finishing position is still done the old fashion way at Start/Finish by the Starter who manually records the car numbers in the order they cross the Finish line. Dave L. please feel free to add to this.