Related Clues:

• 66, for ex.
• Address abbreviation, perhaps
• Interstate abbr.
• GPS suggestion
• G.P.S. request
• Bus assignment: abbr.
• GPS info
• UPS driver's assignment
• Tpk.'s kin
• USPS info
• USPS assignment
• AAA option
• Rd. or st.
• Help from a GPS
• USPS carrier's course