What should you be cautious about when driving directly behind a heavy truck or bus?

Being cautious when driving directly behind a heavy truck or bus is primarily important because your visibility is significantly blocked by the larger vehicle. This obstruction can prevent you from seeing the traffic conditions ahead, including slower vehicles, traffic signals, or any hazards that may arise. It can lead to a delayed reaction, making it potentially dangerous if the vehicle in front suddenly brakes or changes direction.

The nature of large trucks and buses means that they have substantial blind spots, and when you are directly behind them, those blind spots can extend both forward and backward. It is crucial to maintain a safe following distance to ensure that you can see the road conditions clearly and have enough time to react to any changes or emergencies. This practice enhances overall safety for yourself and all road users.