impassable

This can of course blow up if you hit an impassable snag; that's why it's a last resort.

If the weather is nice it gets insane to the point of the street becoming impassable.

Hyrule in each of the first four Zelda games in 2D is a flat rectangular world with impassable edges.

The motorway flow is improved, sure, but local single lane roads become impassable for hours.

For example, a locked door in a dungeon obviously is going to be impassable to players, right?

You're talking about 8 or more pumps and appropriate hoses curling up the staircases, making them impassable... but people need those stairs.

One might miss the twisty, dusty country road in leisure time, but curse it when it's raining and the road has turned into an impassable morass.

Not when our regulatory agency's recent histories read the way they do. It's laughable to cast the FDA as an impassable obstacle.

A* is A*, it doesn't matter if you dynamically modify the terrain, and it's easy enough to check if a path would end at walls or impassable terrain, and have the AI deal with that accordingly.

Yeah it's passable in flatlands or sparsely populated areas, but frankly automatic cars aren't really going to be any worse than humans at traversing bad conditions, so an impassable road for an automatic car would be impassable also for a human driver.

Much of the cost of these programs is just getting supplies and people to all of these remote villages with impassable roads, the occasional corrupt official or militia, etc.[1] Some of that is effectively fixed cost, and doesn't vary much whether you have two boxes of deworming pills in the back of your truck or 20.