Our local chip sealed narrow two lane highway with no shoulder doesn't just have a fog line. Right next to it is what I call a 'rumble strip', a line of raised bumps that make a distinctive noise when hit to alert drunk or texting drivers they are not staying in their lane. These are also along the center line, and often they'll have several full road ones to alert the drivers they are approaching a fully visible stop sign. These lines are not at all pleasant to hit on a bike, especially at high speed.