What usually causes collisions on the road?

Collisions on the road often stem from disruptions in the flow of traffic. When traffic flow is interrupted—for instance, due to sudden stops, merging vehicles, or unexpected lane changes—drivers may find themselves in unpredictable circumstances that can lead to accidents. A smooth flow of traffic allows drivers to anticipate the behavior of others on the road, whereas disruptions can lead to confusion and potential collisions.

Driver distractions, weather conditions, and mechanical failures also contribute to accidents but are generally considered secondary factors compared to how traffic flow impacts decision-making and driver behavior in real time. Understanding traffic dynamics and maintaining a consistent flow is critical for reducing the likelihood of collisions.