During a pre-trip inspection, why should you check the glad hand seals where the tractor and trailer air lines connect?

Pick an answer

1. Glad hand condition has no effect on braking as long as they're connected
2. A worn or cracked seal can leak air and weaken the trailer's brakes
3. Seals only matter for keeping rain out of the connection
4. Glad hands are only there to hold the lines in place when parked, they carry no air themselves

Correct!

Not quite. The correct answer is highlighted.