Why is backing up especially difficult with a doubles or triples combination?

Pick an answer

1. Doubles and triples combinations cannot be backed up at all, and drivers must always pull through instead no matter how it's loaded
2. Each additional trailer articulates independently, making the combination harder to predict and control in reverse
3. Backing up is actually easier with more trailers attached
4. Only the lead trailer needs to be watched while backing

Correct!

Not quite. The correct answer is highlighted.