Which of the following actions should be avoided when driving behind a long vehicle?

When driving behind a long vehicle, it is crucial to avoid attempting to overtake without seeing clearly. This is because long vehicles, such as trucks or buses, have larger blind spots and can obstruct the view of the road and other vehicles. If you cannot see clearly ahead due to the height or length of the vehicle, overtaking can lead to dangerous situations, including the risk of colliding with oncoming traffic or misjudging the available space to complete the maneuver safely.

Ensuring full visibility before attempting to overtake is essential to making informed decisions and maneuvering safely. By waiting until you have a clear view of the road ahead, you can assess traffic conditions accurately and reduce the risk of accidents. Thus, prioritizing clear visibility is a fundamental aspect of safe driving in situations involving long vehicles.