Related Clues:

• Letters in many addresses
• 1 or 66
• Course of travel
• It may be polar
• It usually involves turns: Abbr.
• Papers are tossed along it
• Letter carrier's assignment: Abbr.
• Bit of AAA info
• Auto-club suggestion
• P.O. worker's circuit
• Detour, e.g.: Abbr.
• AAA info.
• 66, famously
• GPS display
• Series of turns: Abbr.