The Compulink Timing System is accurate to 10 decimal places.
At 125 MPH (183.3 ft/sec) it can determine a winner within 0.000002197 inches.
In the case of a "tie", which according to Compulink has only happened 3 times in 30 years, both cars advance to the next round.
http://www.competitionplus.com/drag-...ronman-classic