TLSAE Road Signs and Traffic Signals 1 — Questions and Answers
Question 1: What shape is used exclusively for stop signs in the United States?
- Circle
- Triangle
- Octagon (Correct answer)
- Diamond
Correct answer: Octagon
The octagon (8-sided shape) is used exclusively for stop signs in the US, making them instantly recognizable even when obscured by snow or damage.
Question 2: A yellow diamond-shaped sign with a black 'X' and 'RR' indicates:
- A rest area ahead
- A railroad crossing ahead (Correct answer)
- Road reconstruction zone
- A rural route marker
Correct answer: A railroad crossing ahead
A yellow diamond sign with 'RR' and a black X warns drivers that a railroad crossing is ahead.
Question 3: What does a flashing RED traffic light signal require a driver to do?
- Slow down and proceed with caution
- Stop completely, yield to traffic and pedestrians, then proceed when safe (Correct answer)
- Treat it as a yield sign
- Stop and wait for the light to change to green
Correct answer: Stop completely, yield to traffic and pedestrians, then proceed when safe
A flashing red light must be treated like a stop sign — come to a complete stop, yield, then proceed when it is safe.
Question 4: What color and shape are regulatory signs (signs that state traffic laws)?
- Yellow diamonds
- White rectangles or squares (and octagons for stop signs) (Correct answer)
- Green rectangles
- Orange diamonds
Correct answer: White rectangles or squares (and octagons for stop signs)
Regulatory signs are white with black or red text, typically in rectangular shapes, and include speed limit signs, no-turn signs, and stop signs.
Question 5: A white sign with the message 'DO NOT PASS' means:
- Passing is discouraged but permitted if safe
- Passing is absolutely prohibited at this location (Correct answer)
- Passing large trucks is prohibited
- The passing lane ends ahead
Correct answer: Passing is absolutely prohibited at this location
A 'Do Not Pass' sign is a regulatory sign meaning passing is legally prohibited at that location.
Question 6: What does an orange traffic sign typically indicate?
- School zone
- Construction or work zone ahead (Correct answer)
- Recreational area nearby
- Railroad crossing warning
Correct answer: Construction or work zone ahead
Orange signs are used exclusively in construction and work zones to warn drivers of temporary conditions, detours, and workers present.
TLSAE Road Signs and Traffic Signals 1
What shape is used exclusively for stop signs in the United States?