Click icons to use
Drivers Test Dashboard
Get coins by getting correct answers
World Coin Count
View High Scores
Use the Wrench to knock out incorrect answers, improve your chances to answer correctly, and help you save lives!
** Click on Wrench icon above to use **
30 Coins = 5 Extra Wrenches
You need 30 more coins to purchase
Buy Fuel to get 5 extra lives during a quiz!
** Click on Fuel icon above to use **
120 Coins = 1 Fuel
You need 120 more coins to purchase
When coupling a tractor to a semi trailer and have backed up but are not under it, what should you hook up before backing under?
The air pressure release valve.
Nothing. Back up and lock the fifth wheel.
The emergency and service air lines.
The electrical service cable.
Open Dashboard ▼
0 Questions Completed | Your Top Speed is 0 MPH
Review Questions ▼
This question answered correctly by
When coupling a tractor to a semi trailer and have backed up but are not under it, what should you h...