How I can save and restore my routes which I have incompleted?

When you are in a route and want to leave for a few hours maybe even a few days. Just stop the bus, make sure it aint moving or it might be wrecked when you load it back. I suggest pulling up to the closest Wendy's(Mendy's) or gas station and park. Then press pause, press save and quit. And then continue back where you left off later. When you reload the game it will ask you if you want to complete an unfinished route. And you say yes! And there you go! ur back sitting on the side of the road. You just gotta turn the bus back on and get it out of park an go!