continuing with the example of the vehicle to aircraft collision on the ramp, the 5 why's and the risk statement techniques can be explained, those looking at the potential event could ask why might a collision occur? the answer might be that a collision could be caused during night operations because of low visibility a follow-on why? might be why will visibility on the ramp be degraded? the answer might be there is inadequate lighting on certain segments of the ramp area where a collision might occur another why might be why is there insufficient lighting? the answer might be that funding is not available or the airport master plan does not call for extra lighting for certain areas, which may lead to deciding the hazard is insufficient ramp lighting (figure 9-2 illustrates the preceding example)