Related Clues:

• 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
• Pathways
• Put nothing into X-ray units for the RDS
• They may have soft shoulders