Triple trailer combination vehicles are: Do you currently have motorcycle insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Triple trailer combination vehicles are: Answers Legal in every state. Allowed to be driven on rural roads. Legal everywhere outside of New York City. Not allowed on New York highways. Explanation It is not legal to operate triple trailer combination vehicles on highways in New York State. Make sure you are aware of local and state laws before operating a vehicle in any area.