If you have coupled with a semi-trailer, where should you put the front trailer supports before driving away?

6.4.1 – Coupling Tractor-Semitrailers
Step 15. Raise Front Trailer Supports (Landing Gear)
Use low gear range (if so equipped) to begin raising the landing gear. Once free of weight, switch to the high gear range.
Raise the landing gear all the way up. (Never drive with landing gear only part way up as it may catch on railroad tracks or other things.)
After raising landing gear, secure the crank handle safely.
When full weight of trailer is resting on tractor:
- Check for enough clearance between rear of tractor frame and landing gear. (When tractor turns sharply, it must not hit landing gear.)
- Check that there is enough clearance between the top of the tractor tires and the nose of the trailer.
[CDL DRIVER MANUAL FINAL]