You want to overtake on a tree-lined avenue. What special aspect should you bear in mind?

Your answer is fully correct. On tree-lined avenues, special caution is necessary because the side clearances can be easily misjudged due to the proximity of the trees. Vehicles with high superstructures (like trucks or buses) may swerve unexpectedly to avoid hitting branches, which can cause sudden evasive maneuvers. Additionally, accidents involving collisions with trees are more frequent in these settings, making it important to maintain proper distance and be extra vigilant when overtaking. Knowing these risks helps prevent accidents and ensures safer passing on such roads.