The 4th hole at my course has a road running right across the middle of it and my ball was right on it. I had to drop the ball back within one club length however the green keeper had stopped cutting the fairway about 2 yards from the road, so I had to drop it in the rough despite being in the middle of the fairway... bang goes my chances of spinning a wedge to 3 feet...hmmm

After the round I just happened to check the clubhouse noticeboard and there was (and still is) a local rule posted stating that you get 2 club lengths relief from that road until further notice

The moral: If you can, try to take a passing glance at your club noticeboard every once in a while