It is part of our natural self-defense to claim after an accident that we could do little or nothing to avoid the accident. And, of course, it was not our fault. The others have done it or it was caused by some odd circumstances beyond our control.
An employer, however, wants to know what really went wrong with respect to the driving behaviour. He has to know to make a decision whether the driver needs some further training or if there are other problems which have to be solved quickly so that such an accident with all its consequences will not happen again.