Why are bicycle and motorcycle riders more at risk in traffic?

Bicycle and motorcycle riders are at a higher risk in traffic primarily because they are harder to see and lack protection. Unlike cars, which have a larger physical presence on the road and often come equipped with safety features like crumple zones and airbags, riders of bicycles and motorcycles are more exposed. This makes them less visible to drivers, especially in blind spots or during difficult weather conditions.

Additionally, the lack of protective barriers increases the risk of serious injury in the event of a collision. While visibility and physical protection are crucial aspects that contribute to the vulnerability of these riders, other factors, such as experience and signaling skills, may contribute to risks but are not as fundamental as the inherent lack of protection and visibility. Therefore, the correct answer highlights the significant challenges that bicycle and motorcycle riders face in traffic situations.