AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/drive-white-rectangle-regulatory

A white rectangle sign with black letters, like SPEED LIMIT 45, is what kind of sign?

Start playing free

  1. Regulatory
  2. Warning
  3. Advisory

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Driver Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. New York State Driver's Manual, Chapter 4 dmv.ny.gov/new-york-state-drivers-manual-and-practice-tests/chapter-4-traffic-control Checked 2026-10-09.
  2. California Driver's Handbook, Section 7 www.dmv.ca.gov/portal/handbook/california-driver-handbook/laws-and-rules-of-the-road Checked 2026-10-09.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Cars & DrivingYellow diamond-shaped signs with black symbols are what type of sign?Cars & DrivingWhat does an orange sign with black letters tell you?Cars & DrivingHighway signs showing cities, exits and miles to go are usually what color?

That's stuff everyone should know.