Use this glitch to get to a spot on Tranzit where the zombies can't get you.

First go to the Power House and drop down into the Power Core.

Pick up the face plate from somewhere in the room (the location changes) and put it on the workbench.

The face plate will automatically move onto the corner beside the bench. From there you need to crouch into the faceplate brech and move a little left.

Once in the right spot, you are untouchable!

Check out this video for a better description youtube.com/watch?v=aBwRi58WqwU