Not really. The only reason it is there is because every town must be connected in some way, shape or form. You can't just walk from one town to another just by stepping over a line in the games, or in the real world even.
With roads and cars and all of that fun stuff, this interconnected towns and cities across the world. This does not mean that they are connected without roads.
Take this for example. The top image shows a sample connection in the games, with two towns and a road. This is how every town was, and always will be.
The bottom image shows what isn't in the games. Two towns merging into each other with no connection such as a road or cave at all whatsoever. Route 1 is only here so Vanville can connect to Aquacorde.
