Question What is a bobtail tractor? Answers A tractor without a trailer A tractor attached to two trailers A tractor with a tank Explanation Tractors without semi-trailers are referred to as bobtail tractors. Operating a bobtail tractor requires drivers to exercise caution. Take a FREE Practice Test Now This questions appears in the following tests: Michigan Double , Rhode Island Tank , Arizona Combination , Oklahoma Combination , Utah Combination , Virginia Combination ,