Related Clues:

• GPS choices: Abbr.
• Itin. references
• Numbered rds
• Detours, e.g.: Abbr
• Short circuits?
• Ltr. carriers' responsibilities
• Bus sched. data
• Rural rds
• GPS options: Abbr
• GPS calculations: Abbr
• Hwys
• 72-Across and others: Abbr
• Numbered roads: Abbr
• Numbered hwys
• Some map nos