Possible Clues:

• You can't turn back here. O, yes, it's about as new as that
• O, that's fresh. Yes, there's no going back on it
• Without reciprocity
• Allowing traffic in single direction only
• Ticket type
• Street allowing traffic in single direction only
• A singular method of dealing with traffic problems
• What a singular manner of street?
• Certain ticket request
• What's new in that sort of a street? Oh, yes