1. Where I live, It is not uncommon to get stuck behind a slow moving tractor or farm machine on a narrow road. In ALMOST EVERY CASE...it doesn't last more than a mile or two, because after being tailed for a few minutes, the tractor will be considerate and pull over when there is an opporunity to do so, letting the faster traffic pass. Common sense, courtesy, cars have to drive slower for a short time, but not very long.

2. In my group bike rides in these same areas, we often ride 2 or even 3 sided by side when there is no traffic, but when cars come from either direction, we stretch out into single-file to make passing as easy as possible. (The solid line is not an issue, because most of the roads have no lines or paint whatsoever...Yeah, farmland.... :-) I chalk our default response to traffic as common sense and courtesy. (Our groups are usually nomore than 8-12 riders...)

3. On a recent ride, there was a large truck that got stuck behind us as we were climbing a 1 mile, 6-7% grade that curved back and forth sharply. we were climbing single-file, stretched out due to differing climbing speeds, as far right as possible...but the truck did not attempt to pass until the road straightened out...probably because of some kind of common sense and courtesy, or something... :-)