Under umbrella policy definitions, the term 'trailer' includes which type?

• A. Includes semi trailer
• B. Excludes semi trailer
• C. Includes only trailers under 20 feet
• D. Includes only attached trailers

Answer: (A)

Under umbrella policy definitions, the term trailer is defined broadly to cover any vehicle designed to be towed by another vehicle. A semi-trailer fits this description perfectly: it is towed by a tractor, is not self-propelled, and represents a common liability exposure for operations involving large equipment or commercial transport. Including semi-trailers avoids gaps in coverage that would occur if they were excluded, ensuring liability arising from accidents involving such towed units is protected just like smaller trailers. Limiting coverage by size or by requiring only attached trailers would leave real-world risks—like incidents with large, towed semi-trailers—uncovered, which is why the inclusion of semi-trailers is the best interpretation.