Every road sign on the Colorado exam, with what it means. Free and unlimited.

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Get Smart Review & Mock ExamsThis draw of 40 questions breaks down like this:
Heaviest on Traffic Signs & Signals (21 of 40) — that is the section to revise first if you miss several here.
3 are Colorado-specific questions, drawn from the state handbook rather than general road rules.
Each test on this site draws a different set, so Test 1, 2 and 3 never repeat a question.
Answer: The road may be slippery when wet
This warning sign means the road can be slippery, especially when wet — slow down.
Answer: Turn from the lane nearest the right curb, staying close to the curb
Make right turns from the lane nearest the right curb and keep close to the curb through the turn.
Answer: No passing zone
The pennant marks the start of a no-passing zone.
Answer: Railroad crossing warning
The only round sign is the railroad advance-warning sign.
Answer: Pedestrians and cross traffic before turning
Right-on-red is allowed after a full stop, yielding to pedestrians and cross traffic.
Answer: Two-way traffic ahead — keep right
This warns that the road ahead carries two-way traffic; keep right and don't pass.
Answer: Green
Green signs provide directional guidance.
Answer: Use hand signals until repaired
Use hand signals if your signals fail.
Answer: Yield
A downward triangle is a YIELD sign — slow down and give the right-of-way; stop if needed.
Answer: A lane is being added — you may not need to merge
An added-lane sign means a lane is joining; the added traffic doesn't have to merge immediately.
Answer: Nearest legal lane
Turn into the nearest legal lane going your direction; don't swing wide across lanes.
Answer: Yield and stop — they always have the right-of-way
You must always yield to a blind pedestrian using a white cane or guide dog.
Answer: A sharp turn to the right ahead
A sharp-turn (right-angle) arrow warns of a sharp turn ahead — slow down considerably.
Answer: A side road entering from the right
A side-road sign warns that another road joins from the right; watch for vehicles entering.
Answer: Needs more room to stop and turn and has big blind spots
Trucks need more stopping and turning room and have large No-Zones.
Answer: Yield to the pedestrian before crossing the sidewalk
Vehicles crossing a sidewalk must yield to pedestrians already on it.
Answer: 0.02%
Under-21 drivers face revocation at a BAC over .02.
Answer: Increases sharply
Higher speed means a much longer stopping distance — roughly quadrupling when you double your speed.
Answer: That lane is for going straight through
A straight arrow means the lane is for through traffic only.
Answer: In the order vehicles arrived and stopped
Go in arrival order; if you tie, the driver on the right goes first.
Answer: Pick a fixed point and count 3–4 seconds behind the car ahead
Count 3–4 seconds from when the car ahead passes a marker until you reach it.
Answer: Keep you from driving into oncoming traffic
These signs stop you from entering a road the wrong way against traffic.
Answer: Even small amounts impair skills you need
Impairment begins with the first drink — the safest amount before driving is none.
Answer: No right turn
This sign prohibits right turns.
Answer: Come to a complete stop
A steady red means stop fully and remain until it turns green (right-on-red after stopping unless posted).
Answer: A steep downgrade (hill) ahead
This warns of a steep hill/downgrade ahead — control your speed and gear.
Answer: Merging traffic — be ready to adjust
A merge sign warns that another roadway is joining yours; adjust speed/position to merge safely.
Answer: Parking reserved for people with disabilities
The blue wheelchair sign marks disabled parking — a valid permit is required.
Answer: In your rearview mirror
Return only when the passed vehicle is visible in your rearview mirror.
Answer: Downward triangle
The yield sign is a downward-pointing triangle.
Answer: A citation and endangering lives
Not yielding to emergency vehicles is illegal and dangerous.
Answer: 20 MPH under the posted limit
Slow to 20 MPH under the posted limit when it's above 45.
Answer: Slow down, move over if possible, and watch for people and debris
Slow down, move over, and watch for injured people, responders, and debris.
Answer: A yield sign ahead
A yield-ahead sign warns that a yield is coming up — be ready to give the right-of-way.
Answer: Oncoming traffic and pedestrians in the crosswalk
Yield to oncoming traffic and crossing pedestrians before turning left.
Answer: Detour — follow the marked alternate route
An orange detour sign directs you along a temporary alternate route.
Answer: The right-of-way
Yield to vehicles already in the roundabout before you enter.
Answer: In marked and unmarked crosswalks
Yield to pedestrians in both marked and unmarked crosswalks.
Answer: A school zone or school crossing
The pentagon shape marks a school zone or school crossing ahead.
Answer: The right lane ends ahead — merge left
The right lane ends ahead; merge left when safe.
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