Which statement about a commercial vehicle's overhead clearance is correct?
Correct answer: B – The vehicle's height can change when its load changes
The Maine Commercial Driver License Manual notes that an empty van may sit higher than the same van when loaded. Clearing an overpass while loaded does not prove the empty vehicle will clear it. Repaving, packed snow, and roadway tilt can also affect available space, so the driver must make sure adequate overhead clearance exists.
Source: Maine Commercial Driver License Manual — § 2.7.4, “Space Overhead”

