What should you check regarding the converter dolly's brakes as part of the full combination's air brake test?

Pick an answer

1. Dolly brakes are tested only once a year, not as part of every pre-trip inspection even though it has its own axle and air system
2. Only the trailers need brake checks; the dolly is exempt
3. Converter dollies do not have brakes and this step can be skipped
4. That the dolly's own brakes apply and release properly, since it has its own axle and brake components

Correct!

Not quite. The correct answer is highlighted.