Besides the couplings, what else should you inspect closely on each trailer in a doubles/triples combination?

Pick an answer

1. Rear trailers don't need lights since they are harder for other drivers to see anyway
2. Only the lead trailer's tires need checking
3. Tires, brakes, lights, and cargo securement on every trailer, not just the lead one
4. Cargo securement only matters on the last trailer in the combination

Correct!

Not quite. The correct answer is highlighted.