What should you inspect regarding the trailer's brake lines and gladhand seals as part of a combination vehicle check?

Pick an answer

1. Nothing additional beyond what is checked on the tractor alone
2. That they are properly connected, not crossed, and free of cracks that could cause an air leak
3. Only that they are the same length as the tractor's lines
4. That they are loosely connected on purpose to allow flexibility while the trailer turns sharply

Correct!

Not quite. The correct answer is highlighted.