My apologies, everybody, for kicking the hornet's nest upthread.
Adding international crossings would mean adding stuff less than 3 miles long, which apparently isn't allowed
I don't know where people keep getting this idea, but there is zero truth to it.
Without even taking a look at routes outside North America, we see that cannf has two routes < 3 miles, and usasf has 27.
I only agree when there is an exit or junction where you can legally turn or leave the road. If not, the graphs should stay connected.
Strongly disagree. There are numerous instances of roads ending at non-intersections; it's common enough that there's
a manual section on how to label them.
We shouldn't be falsely adding extra length onto the end of a route just for a graph connection.
If the routes end at the ports of entry plaza whaddayacalls, the ends of ON3Win, CA7, and NY384 are appropriate.
(Although there's no corresponding route across the border to beg for a graph connection, so these may not be the best examples of the principle...)