Which plant characteristic becomes important for traffic control when selecting species?

• A. Flower Color
• B. Branching Habit
• C. Growth Rate
• D. Root Spread

Answer: (B)

Maintaining clear visibility on the road is essential for safety, and how a tree branches determines how its crown will form near driving lanes. A species with a compact, upright branching habit tends to keep branches up and away from the street and from traffic signs, preserving sight lines at intersections and along the road. This makes it easier to see signals and other vehicles and to prune as the tree grows, reducing the chance of future obstructions. Flower color doesn’t affect visibility or safety, growth rate changes how quickly the canopy appears but not how well sight lines are maintained, and root spread is more about pavement or utility concerns than immediate traffic visibility.