Related Clues:
- Arteries with shoulders
- Pikes, e.g.
- Pothole sites
- There are four hidden in this puzzle, which together suggest a familiar five-word saying (3,5,4,2,4)
- Some have forks
- Freeways, for instance
- Construction projects
- Rome leaders?
- Lines on GPS displays
- Ones running shoulder to shoulder?
- Tobacco/Thunder
- Lines on maps, perhaps
- Ways, routes
- Might pathology be the study of them by road?
- They're all under more than one foot