The pre-trip inspection should show that the exhaust system is _________.

Condition of visible parts:
- Rear of engine: not leaking.
- Transmission: not leaking.
- Exhaust system: secure, not leaking, not touching wires, fuel or air lines.
- Frame and cross members: no bends or cracks.
- Air lines and electrical wiring: secured against snagging, rubbing and wearing.
- Spare tire carrier or rack not damaged (if so equipped).
- Spare tire and/or wheel securely mounted in rack.
- Spare tire and wheel adequate (proper size, properly inflated).