What is the safest speed to travel according to traffic conditions?

Answer: B — Prevailing speed of traffic

The safest speed to travel according to traffic conditions is the prevailing speed of traffic. This is because driving at a speed consistent with the flow of traffic can enhance safety for all road users. When you match the speed of other vehicles on the road, you reduce the risk of collisions caused by significant speed differentials, which can occur when faster vehicles interact with slower ones. While the speed limit provides a legal framework for maximum allowable speed, it may not always reflect safe driving conditions, especially during adverse weather or heavy traffic. Appropriately adjusting your speed to conform with the prevailing conditions helps ensure everyone can react adequately to potential hazards, making the roadway safer overall.