When following a truck at night, what adjustment should drivers make?

Answer: B — Dim their vehicle's headlights

When following a truck at night, drivers should dim their vehicle's headlights. High beams can be excessively bright and may impair the visibility of the truck driver, especially in their mirrors. By dimming the headlights, drivers ensure that they do not create glare for the truck driver, allowing both parties to see better and maintain a safe distance. This practice enhances safety by reducing the risk of accidents caused by visibility issues. It is important to be considerate of other drivers on the road, particularly larger vehicles like trucks that have limited visibility and may be more affected by bright lights.