Once the tractor and trailer have been connected, the driver should immediately perform which of the following?
Explanation
Answer: B - Once the tractor and trailer have been attached and all air lines connected, drivers must perform a pull test. In a pull test, the brakes are engaged by pulling out the red brake knob, shifting into first gear, and gently easing the tractor forward. If all is correct, the trailer should hold back the tractor. If drivers notice that the trailer moves forward during the pull test, they should immediately have the trailer brakes inspected and serviced.
