If the driver fails to stop, soldiers will fire directly on the vehicle.
As a result, drivers fail to achieve the certified values in practice.
A driver on the M15 failed to respond to a disabled man's request to call out a stop.
Sometimes, it seems as though civilian drivers merely failed to get off the road fast enough.
In the next three races, both drivers finished, but failed to score any points.
But yesterday, his new graphite-shafted driver failed him only on the 372-yard 16th.
So far, a driver has only failed to qualify on one occasion.
This was the last time when a driver failed to pre-qualify.
During the 2007 race, three drivers failed to get going off the grid.
And judging by the early results, many drivers are failing the written part of the test.