The hand valve should be used
a) Only with the foot brake
b) Only when the trailer is fully loaded
c) To test the trailer brakes
Answer: c) To test the trailer brakes
a) Only with the foot brake
b) Only when the trailer is fully loaded
c) To test the trailer brakes
Answer: c) To test the trailer brakes
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.