To drive safely, especially on **curves and crests with reduced visibility**, it is essential for vehicles to keep **to the right and as close as possible to the edge of the roadway**. This is important because it allows the part of the roadway intended for the opposite direction to remain clear, thus avoiding possible collisions with vehicles coming from the opposite direction.


Additionally, by driving on the right, the flow of traffic is facilitated and the risks of accidents are minimized, especially in situations where visibility is limited. Staying close to the edge of the roadway also helps to have better control of the vehicle and to react appropriately to any unforeseen events on the road.