Two-wheeled vehicles, such as motorcycles and mopeds, are less visible than four-wheeled vehicles. This is due to their smaller size and narrower profile, which makes it possible for other drivers not to see them easily, especially in heavy traffic situations or in low visibility conditions.

To improve their visibility, it is important for the drivers of these vehicles to use lights and reflective clothing, especially at night or in low visibility conditions. Additionally, drivers of other vehicles must be especially careful when changing lanes or turning, ensuring that there are no motorcycles or mopeds nearby.

In summary, the lower visibility of two-wheeled vehicles is a key factor that contributes to their higher risk of accidents, and both the drivers of these vehicles and others must take measures to mitigate this risk.