Question Combination vehicles: Answers Are usually shorter than single commercial vehicles. Are usually lighter than single commercial vehicles. Require more skill to drive than single commercial vehicles. Are easier to drive than single commercial vehicles. Explanation Combination vehicles are usually heavier and longer than single commercial vehicles. For these reasons, they usually require more driving skill than single commercial vehicles. Take a FREE Practice Test Now This questions appears in the following tests: Wisconsin Double , Connecticut Combination , New York Combination , North Dakota Combination , Pennsylvania Combination , West Virginia Combination ,