This panel is placed below a danger sign to indicate...
A)the length of the hazardous section.
B)the distance at which the hazard ends.
C)the distance at which the hazard begins.Correct
The supplementary panel placed below a danger sign indicates the distance at which a hazard is located. In this case, the sign indicates that at 200 metres there will be a speed bump, dip, or a section of road in poor condition. If two arrows appear alongside the numbers, it indicates the length of the hazard (its extent).