A combination vehicle has: Do you currently have car 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 A combination vehicle has: Answers One air line. Two air lines. Three air lines. Four air lines. Explanation Combination vehicles have two air lines: a service line and an emergency line. This questions appears in the following tests: Alabama Combination Connecticut Combination District Of Columbia Combination Florida Combination Georgia Combination Georgia Combination Mississippi Combination Pennsylvania Combination Texas Tank Utah Combination