Related Clues:

• Passing through
• Word on a travel itinerary, perhaps
• Routing term
• Rail passenger svce.
• ___ Dolorosa, difficult course
• ___ Rail
• The Italian way?
• ____ Rail
• Road, in Rome
• Traversing
• __ Lactea (our galaxy)
• Part of an itinerary
• Seneca's road
• Jerusalem's ___ Dolorosa
• Prefix with "duct"