According to the IMO Code, what are the minimum number of securing points that should be on each side of a "road vehicle", whose gross vehicle mass is between 30 tons and 40 tons, when carried on Ro-Ro vessels?

Correct Answer: Option D — Four

Heavier road vehicles, specifically those with a gross vehicle mass ranging from 30 to 40 tons, require a minimum of four designated securing points on each side to safely handle escalated inertial forces aboard Ro-Ro vessels.