Hl1 Train Control Question

I wanted to make a track_train in my map that functioned like the trains in Half Life 1. Can you do that? I don’t really expect the forward/backward graphics, I just want it to work the way it did then.

I’ve been looking through the Hammer Wiki, but I haven’t seen anything about it specifically. I saw the HL1 Train properties where it stops you from falling off the train, but that was it.

http://www.interlopers.net/tutorials/2393

This principle only on a flat surface rather than vertical.

ok ill see if that works. thanks =D