Which of the following should be avoided when traveling slowly in a heavy vehicle?

When traveling slowly in a heavy vehicle, changing lanes frequently should be avoided because it can create confusion and unpredictability for other drivers sharing the road. Heavy vehicles, such as trucks and buses, take longer to accelerate and may have limited visibility, making unexpected lane changes potentially dangerous. Frequent lane changes can signal to other drivers that the vehicle is unstable or uncertain, leading to increased risks of collisions or near misses.

In contrast, making eye contact with other drivers, using turn signals appropriately, and being aware of your surroundings are all critical practices. They enhance communication and ensure that other road users understand your intentions, thus promoting safety. Being predictable and clear in your driving maneuvers is essential for the safety of both the heavy vehicle operator and other road users.