Where must you particularly reckon with dirt on the roadway and therefore danger of skidding?

You answered correctly. Dirt on the roadway, which can cause skidding and loss of control, is especially common near construction sites and at junctions with farm tracks. Construction vehicles and farm machinery often bring mud or debris onto the road, increasing the risk of slippery conditions. Innercity crossroads are less likely to have this kind of dirt, so extra caution is particularly needed in the first two situations. Always reduce speed and be prepared for slippery surfaces in these areas. This awareness helps you anticipate and avoid potential hazards.