I like this map a lot, but it's really empty. Screw accuracy, try to fill it with some more stuff so it's not just the roads and then practically nothing else.
By the way, the radio tower is awesome but it's impossible to get down from without dying.
Actually, I'm still adding detail to it but yeah it's pretty empty right now. About the radio tower, i'll most likely make a button for teleportation down to the ground.