Fifth Wheel release handle – This video shows how to work the fifth wheel release handle in the new Freightliners. Skip to 2:10, the first two minutes just talk about why is “the safest fifth wheel in the world” and how is designed.
If the video won’t load, here’s a brief explanation. You have to lift the handle and then pull it out and forward towards the front of the truck to get the arm past the first lock; then keep pulling until you catch it on the second lock. It’s easier if you pull with your left arm, lean back as you pull, your weight will shift the arm forward.