A rectangular-shaped sign is a:

  1. Stop sign
  2. Speed limit sign ✓
  3. Railroad crossing sign
  4. School crossing sign

Answer: B. Speed limit sign

A rectangular-shaped sign is a speed limit sign.

Why this is the answer

The manual groups speed limit signs under regulation signs, which it describes as white with black and/or red letters or symbols and says give information about rules for traffic direction, lane use, turns, speed, parking and other special requirements. It repeats that rectangular white signs with black or red letters or symbols alert you to special rules. A posted speed limit fits that description, so a rectangle is the shape that carries a speed rule rather than a warning or a stop.

Why the other answers are wrong

Remember it

Think of the white rectangle as the sign that carries a rule you must follow, and the posted speed is one of those rules.

Official handbook: New York State Driver's Manual (MV-21), Chapter 4: Traffic Control – Signs

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.