Related Clues:

• Some map lines: Abbr.
• Flight plan info
• 1 or 66, e.g.: Abbr.
• GPS calculation
• Lines on a GPS
• Road map line: Abbr.
• Itinerary parts: Abbr.
• 66, famously: Abbr.
• GPS suggestions
• GPS calculations
• Road no.
• Directions' details: Abbr.
• Delivery persons' assignments: Abbr.
• Rural env. abbr.
• U.S. 1, for one