However some back roads aren't even B roads, the classification keeps going through C and D but it's local numbering, the numbers are just for local maintenance crews - so a C-1234 could be duplicated a few miles away in another local government territory and that would be confusing for drivers so they won't write C-1234 on a sign, they'll just say what's in that direction or maybe a local name for the road.
The best case scenario then, is that you write off your car with a deer shaped hole in the front. The worst case scenario is you have a death on your conscience for the rest of your life.
When I started driving I preferred the dark for these roads because the lights let you 'see' hazard around a corner.
Headlights were worse then - and I hadn't seen a crash into a deer.