Which statement about a commercial vehicle's overhead clearance is correct?
Correct answer: B – The vehicle's height can change when its load changes
Cargo weight can change a vehicle's overall height. For example, an empty van may sit higher than the same van when loaded, so clearing an overpass while loaded does not prove it will clear when empty. Posted clearance can also be affected by repaving or packed snow, and road tilt can reduce clearance near roadside objects.
Source: North Dakota Commercial Driver License Manual 2025–2027 — § 2.7.4, “Space Overhead”


