What replaced 'via' in routing notation?

• A. By way of
• B. Through
• C. Via remains
• D. Thru

Answer: (D)

In routing notation, brevity matters because signs and maps need to be read at a glance. The word through is commonly shortened to thru when indicating a path that continues or passes through a waypoint. This shorter form conveys the same idea as via but fits more neatly in space-limited contexts, making instructions quicker to read for travelers. So the replacement is the abbreviated form that riders recognize as a continuation along the route.

The other options don’t fit as well because they either add unnecessary words (a longer phrase), use the full form (through) instead of a compact abbreviation, or imply no change in notation (via remains).