What results in specific risks to motorcyclists?

All three answers are correct. Motorcyclists face increased risk when riding with the visor open, as this exposes their eyes to insects, dust, and debris, which can impair vision and concentration. Riding in heavy rain also increases dangers because wet roads reduce tire grip and decrease visibility. Changes in the road surfacing, such as transitions between asphalt and cobblestones or encountering potholes, can suddenly affect traction and stability for motorcycles much more than for cars. Being aware of these factors helps motorcyclists ride more safely.