Have you set the track properties? Go into network edit mode and part way down the LH side you'll see something that looks like a mini rugby goal, click that. That allows you to select a length of track and modify properties. You'll need to toggle their visibility (look for the envelope on the right of the property column, toggle it to see the eye). You'll get lots of options about speed and electrification and markers in there. There's an awful lot of options, so I'm only giving you the broad-brush overview. Once you've selected what you want to see, you can toggle that globally using "G". I'm also assuming that this bit is the same in the public editor. You'll need to scroll right down to fairly close to the bottom to check if the property you're applying is bidirectional or unidirectional. I've not got the work machine up at the moment, so I'm going off memory.