Colorado Practice Test

Colorado Practice Test (25 questions). Correct answers and explanations are noted under each question.

1. 1. What does this Fresh Oil sign require of a driver approaching the treated pavement?

   

   1. Brake and steer gently and leave extra following distance behind the vehicle ahead. (correct)
   2. Maintain highway speed since the treatment sets quickly under traffic.
   3. Stop before entering the treated section and wait for a flagger to wave you through.
   4. Change to the adjacent lane to avoid driving on the fresh surface.

   Why: The sign marks a surface treatment that has just been laid down and has not yet set, so the pavement offers much less grip than it looks like it should. Brake and steer gently, and leave extra following distance so loose chips and oil thrown up by the vehicle ahead don't reach your windshield. The trap is the choice that turns the sign into a flagger cue and stops the driver; every orange work-zone diamond is a hazard warning, not a traffic-control order, and nothing on this one directs a halt.

   Source: Manual on Uniform Traffic Control Devices, sign W21-2 (Fresh Oil).

2. 2. What does this sign require of a driver turning left when the signal shows a solid green ball?

   

   1. Yield to oncoming traffic before completing the turn. (correct)
   2. Come to a full stop at the line, then turn when clear.
   3. Turn without yielding, because the green ball protects the turn.
   4. Wait for a green arrow; the circular green does not allow a left turn.

   Why: The placard restates the permissive left-turn rule: on a circular green ball, a driver may turn left but must first wait for a safe gap in oncoming traffic. The trap is the choice that treats the green ball as a protected turn, which is what a green arrow does; the placard is posted precisely because the ball does not protect the turn.

   Source: Manual on Uniform Traffic Control Devices, sign R10-12 (Left Turn Yield on Green).

3. 3. A green rectangular sign posted at the point where an off-ramp splits from the freeway shows EXIT with a number and an arrow. What does this sign identify?

   

   1. The exit number of the ramp you are entering at the point of separation. (correct)
   2. The distance in miles to the next numbered exit ahead.
   3. The mileage from the state line along this freeway.
   4. The route number of the highway the ramp connects to.

   Why: The E5-1a combines EXIT and the number at the point the ramp splits from the through lanes, so a driver leaving the freeway sees the ramp identified as they enter it. The distance-based pick is the one to watch: it borrows the mileage from an advance guide sign posted a mile or two before the exit, and a reader who pictures that earlier sign carries the mileage across to the gore. The gore sign carries no distance figure.

   Source: Manual on Uniform Traffic Control Devices, sign E5-1a (Exit Gore Sign With Exit Number).

4. 4. What does this No Left Turn sign require of a driver in the lane where it is posted?

   

   1. Continue straight or use another approved movement; a left turn from that lane is prohibited. (correct)
   2. Make the left turn only after coming to a complete stop and yielding to oncoming traffic.
   3. Make the left turn only when a green arrow is displayed on the traffic light.
   4. The prohibition applies only during the hours shown on a plaque mounted below the sign.

   Why: The sign forbids a left turn from that lane at any time, so a driver must continue straight or use another approved movement. The trap is the time-of-day answer, which reads the exception as the base rule; a supplemental time plaque is needed to limit the prohibition to certain hours, and without one the sign applies full-time.

   Source: Manual on Uniform Traffic Control Devices, sign R3-2 (No Left Turn).

5. 5. Traffic on the far side of the intersection has stopped as you reach a white KEEP CLEAR legend painted across your lane. What does the marking require of you?

   

   1. Wait behind the marking until you can get across without stopping in it. (correct)
   2. Stop inside the marked area to hold your position in the traffic queue.
   3. Pull forward into the marked area to leave the intersection behind you clear.
   4. Enter the marked area only after the cross-street signal turns red.

   Why: The KEEP CLEAR legend holds the marked area open for cross traffic and vehicles entering the intersection, so when the road ahead is stopped and you cannot clear the marking you wait behind it. The trap is the choice that stops inside the box; a driver who sees painted words on the road defaults to reading them as a stop line, because that is how most pavement legends work, but this one marks the exact place the driver must not stop.

   Source: Manual on Uniform Traffic Control Devices, marking 3B.26 (KEEP CLEAR Pavement Legend).

6. 6. What does this Speed Limit 50 sign tell a driver about 50 mph on this roadway?

   

   1. 50 mph is the maximum legal speed on this roadway. (correct)
   2. 50 mph is the required minimum speed for through traffic here.
   3. 50 mph is an advisory speed for a curve or hazard ahead.
   4. Drivers should target 50 mph as the ideal cruising speed here.

   Why: The sign posts the statutory maximum for the road ahead, so 50 mph is the ceiling, the highest speed a driver may legally travel until another speed limit sign changes it. Nothing on this sign requires driving 50 mph; it caps the speed rather than mandating it. Drivers who read the number as a required minimum are borrowing the look of a different white rectangle specifically labeled MINIMUM SPEED or MINIMUM SPEED LIMIT.

   Source: Manual on Uniform Traffic Control Devices, sign R2-1 (Speed Limit 50).

7. 7. What does this sign tell you about the facility ahead?

   

   1. A full-service hospital with a 24-hour emergency room.
   2. Emergency medical care at a facility short of a full hospital. (correct)
   3. A highway rest area with restrooms and vending.
   4. A 24-hour pharmacy for prescription refills.

   Why: This blue sign carries a white Star of Life and marks emergency medical services ahead. It is used where medical help is available but the facility is not a full hospital, such as an ambulance station, an urgent care facility, or a trauma center. Supplemental plaques below the sign name the specific type of care offered. Drivers who reach for the hospital answer read the Star of Life as if it were the H that marks a full hospital, mixing two symbols because both belong to the same blue services family.

   Source: Manual on Uniform Traffic Control Devices, sign D9-13 (Emergency Medical Services).

8. 8. What do two solid yellow lines painted down the center of a two-way road require of a driver?

   

   1. Stay to the right of the double yellow and do not cross it to pass. (correct)
   2. Pass on the left when the oncoming lane is clear of traffic.
   3. Cross the lines only to pass a slower vehicle ahead of you.
   4. Traffic in your direction may pass, but oncoming traffic may not.

   Why: Two parallel solid yellow lines mark a no-passing zone that binds both directions, so a driver stays right of them and does not cross to overtake. The choice that permits a pass whenever the oncoming lane is clear applies broken-yellow logic to a marking whose second solid stripe was added precisely to withdraw that permission.

   Source: Manual on Uniform Traffic Control Devices, marking 3B.02 (Double Solid Yellow Center Line).

9. 9. What does this yellow-green pentagon sign tell you about the road ahead?

   

   1. A school zone or school crossing is ahead; slow down and watch for children. (correct)
   2. A pedestrian crosswalk is ahead; yield to any pedestrian already in the road.
   3. You are entering a school speed zone; the reduced limit applies whenever you see this sign.
   4. A stopped school bus with flashing lights is ahead; prepare to stop until the lights go off.

   Why: The pentagon shape and fluorescent yellow-green color mark the school advance warning: a school zone or a school crossing is ahead, so slow down and watch for children stepping into the road. The trap is the plain pedestrian-crosswalk reading. Fluorescent yellow-green is also used on general pedestrian warnings, so a driver who keys on color alone and skips over the pentagon outline reaches for the crosswalk answer, when the five-sided shape is reserved for schools.

   Source: Manual on Uniform Traffic Control Devices, sign S1-1 (School Advance Warning).

10. 10. You approach an intersection and see this destination sign. What does its arrow refer to?

    

    1. The direction to follow from that intersection to reach the named place. (correct)
    2. The road you are already traveling on toward the named place.
    3. The compass direction of the destination from your position.
    4. The name of the road that leads to the destination.

    Why: The arrow on a destination sign posted at an intersection shows the direction to follow from that intersection to reach the named place, whether that direction is a left turn, a right turn, or straight ahead. The answer naming the road the driver is already on tempts drivers who carry over the habit of reassurance markers on a through highway, where an arrow only confirms that the road they are already driving still heads the right way.

    Source: Manual on Uniform Traffic Control Devices, sign D1-1a (Destination and Distance Sign).

11. 11. What do short white T-shaped, L-shaped, or similar marks painted on the pavement along a curb indicate?

    

    1. The boundaries of angled parking spaces along the curb.
    2. The ends of on-street parallel parking spaces. (correct)
    3. The edges of a commercial loading zone.
    4. A no-parking area beside a fire hydrant.

    Why: T- and L-shaped marks sit at the corners of on-street parallel parking spaces so you can see where one space begins and the next ends. Park entirely between a pair of marks and parallel to the curb. A driver whose only curbside parking has been in striped diagonal lots picks the angled-bay choice because every painted parking guide they have used ran the full length of the bay, not just at its ends.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.20 (Parking Space T-Marks).

12. 12. What does this No Right Turn sign require of a driver in the lane where it is posted?

    

    1. Stop before turning right, then proceed when the way is clear.
    2. Continue straight or use another approved movement instead of turning right. (correct)
    3. Yield to any crossing traffic before completing a right turn.
    4. Turn right only when a green arrow signal is showing.

    Why: The sign forbids a right turn at that intersection or driveway from the lane where it's posted, so a driver in that lane continues straight or uses another approved movement. The stop-then-turn answer pulls at drivers who carry a stop-sign habit into a white regulatory sign, treating a full stop as permission to complete the turn; the R3-1 is an outright prohibition, and no amount of stopping first satisfies it.

    Source: Manual on Uniform Traffic Control Devices, sign R3-1 (No Right Turn).

13. 13. After the wheels have fully stopped at a stop sign, when may the driver proceed?

    

    1. After yielding to pedestrians and cross traffic with the right-of-way (correct)
    2. As soon as the vehicle's wheels have fully halted
    3. When a traffic light or officer waves the driver through
    4. After the driver on the right has gone first

    Why: The stop is only the first step; after halting, drivers yield to pedestrians and any cross traffic that already has the right-of-way, then move when the way is clear. Drivers who learned "stop means stop" as the whole rule pull forward the moment the wheels halt and skip the yield step the octagon requires next.

    Source: Manual on Uniform Traffic Control Devices, sign R1-1 (Stop).

14. 14. What does this yield sign require of a driver approaching it?

    

    1. Slow down, give the right-of-way to cross traffic and pedestrians, and stop if needed. (correct)
    2. Stop completely at the line every time before entering the intersection.
    3. Speed up through the intersection to clear it before cross traffic arrives.
    4. Continue at the posted speed unless a signal or officer directs otherwise.

    Why: A yield sign asks a driver to slow, scan for cross traffic and pedestrians, and stop only when someone else has the right-of-way; if the way is clear, the driver may roll through without stopping. The trap is the answer that turns the triangle into a stop sign because both signs are red, but the octagon demands a halt every time and the downward triangle demands one only when a conflict is present.

    Source: Manual on Uniform Traffic Control Devices, sign R1-2 (Yield).

15. 15. Yellow diagonal stripes inside a solid yellow border fill a rectangle between opposing-direction lanes. What does this require of you?

    

    1. Use it as a two-way left-turn lane for turns to either side.
    2. Do not drive into the striped area. (correct)
    3. Treat it as a passing zone for opposing traffic.
    4. Stop inside the stripes before merging into the next lane.

    Why: A rectangle outlined in solid yellow and filled with diagonal stripes is a painted median between opposing-direction lanes, and it is closed to travel. The trap is the two-way left-turn lane, which also sits between opposing traffic and uses yellow paint; a driver who learned that rule first carries it over. But a two-way left-turn lane is bounded by a solid outer yellow and a broken inner yellow with no diagonal fill, and it exists to be entered for turns. The diagonal stripes flag pavement not meant for any travel at all.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.25 (Yellow Diagonal Crosshatch (Neutral Median Area)).

16. 16. What does this crossbuck sign require of a driver approaching the tracks?

    

    1. Yield to any approaching train and cross only when the tracks are clear. (correct)
    2. Come to a complete stop before every crossing, whether or not a train is approaching.
    3. Proceed without slowing because the crossbuck only marks the location of the tracks.
    4. Yield to cross traffic on the road that intersects at this location.

    Why: The crossbuck acts as a yield device at a highway-rail grade crossing: slow down, look and listen both ways, and cross only when no train is coming. The trap is the answer that treats every crossing as a mandatory stop, which carries a stop-sign habit over to a device that only demands a stop when a train is actually there.

    Source: Manual on Uniform Traffic Control Devices, sign R15-1 (Railroad Crossing (Crossbuck)).

17. 17. What does this advance warning sign tell a driver about the road ahead?

    

    1. Railroad tracks cross ahead; slow down and be ready to stop for a train. (correct)
    2. Railroad tracks are at this location; yield to any approaching train.
    3. A traffic light is ahead where the driver may need to stop.
    4. A school crossing is ahead with children who may be crossing.

    Why: The round yellow disc is the advance warning that railroad tracks cross the road ahead, so you slow down, look both ways, and be ready to stop for a train. The trap is the choice that treats this sign as the crossbuck posted at the tracks themselves; the crossbuck is white and X-shaped, while this round yellow sign sits back from the crossing to warn a driver in time to slow.

    Source: Manual on Uniform Traffic Control Devices, sign W10-1 (Highway-Rail Grade Crossing (Round Advance Warning)).

18. 18. A white wheelchair symbol on a blue square is posted on a sign ahead of you. What does it tell a driver?

    

    1. The facility or parking space ahead is accessible to people with disabilities. (correct)
    2. A hospital is located ahead at the next exit.
    3. First aid or emergency medical services are available ahead.
    4. Pedestrians with limited mobility may be crossing the road ahead.

    Why: A white wheelchair on a blue square is the International Symbol of Accessibility, and it tells you the facility or parking space ahead is accessible to people with disabilities. If you treat every blue services sign as medical, you pick the hospital answer instead. Hospitals carry a white H, not a wheelchair.

    Source: Manual on Uniform Traffic Control Devices, sign D9-6 (International Symbol of Accessibility).

19. 19. What does this Divided Highway Begins sign tell a driver about the road ahead?

    

    1. Two same-direction lanes ahead merge into a single travel lane.
    2. The road splits into two separate one-way roadways separated by a median. (correct)
    3. The divided highway ends ahead and traffic returns to two-way.
    4. The road ahead ends at a dead end with no through route.

    Why: The sign warns that the road splits into two separate one-way roadways separated by a median or barrier, so from that point you keep right of the divider and treat each direction as its own one-way street. The trap is the choice that reads the sign as the divided highway ending and traffic returning to two-way; that meaning belongs to the mirror-image W6-2 sign, whose symbol on the same yellow diamond points the opposite way.

    Source: Manual on Uniform Traffic Control Devices, sign W6-1 (Divided Highway Begins).

20. 20. A yellow center line has a solid line on your side and a broken line on the side used by oncoming traffic. What does this require of you?

    

    1. You are not allowed to pass another vehicle. (correct)
    2. You may pass when the way ahead is clear.
    3. Passing is allowed in either direction when safe.
    4. Passing is prohibited in both directions.

    Why: Passing is decided by which line sits on your half of the road. A solid line on your side means passing is not allowed; the broken line belongs to oncoming traffic, and their permission does not extend to you. Drivers who pick the "when the way ahead is clear" option fall back on a rural rule of thumb that any open road allows passing, without first checking which line sits on their own side.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.02 (Broken-and-Solid Yellow Center Line).

21. 21. A solid yellow line runs along the left side of your travel lane. What does it identify?

    

    1. The center line separating traffic moving in opposite directions.
    2. The left edge of the roadway on a divided highway, one-way street, or ramp. (correct)
    3. The right edge of the roadway on any two-lane road.
    4. A lane a driver may cross to pass when the way ahead is clear.

    Why: A solid yellow line along the left side of the travel lane marks the left edge of the roadway on a divided highway, a one-way street, or a ramp. It tells the driver they are at the left boundary of their direction of travel. The trap is the center-line answer. Yellow does separate opposing directions on an undivided two-lane road, and drivers carry that association to any yellow line without checking whether it sits down the middle or along the edge.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.06 (Solid Yellow Left Edge Line).

22. 22. A broken white line runs along the right edge of the roadway between the through lane and an exit ramp. What does it permit a driver to do?

    

    1. Change lanes across it, into or out of the auxiliary lane, when safe. (correct)
    2. Stay in the through lane; the edge line marks a hard boundary.
    3. Pass slower through traffic on the right using the auxiliary lane.
    4. Drive on the paved shoulder outside the marked lanes.

    Why: A broken white edge line marks the boundary between a through lane and an auxiliary lane like an exit ramp, and the broken pattern means you may cross it when it is safe, in either direction. A solid white edge line, by contrast, marks a crossing as discouraged, and double solid white lines mark it as prohibited. Drivers who first learned the shoulder edge line, a solid white marking the road's outer edge, often carry that 'do not cross' habit over to every white edge line and never stop to check whether this line's pattern is broken.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.06 (Broken White Edge Line).

23. 23. A solid yellow line runs down the middle of a two-way roadway, separating your lane from oncoming traffic. What does it require of you?

    

    1. Stay right of the line and do not cross it to pass slower vehicles. (correct)
    2. Pass slower vehicles ahead when the way looks clear.
    3. Cross the line at will to reach any driveway, alley, or side road.
    4. Make no left turn across the line at any point.

    Why: A solid yellow line down the center of a two-way road separates opposing traffic and closes passing on your side. You keep to the right of it and cross it only to make a permitted left turn into a driveway, alley, or side road, and only when it is safe. The trap is the choice that reads the marking as a broken yellow line and treats a clear road ahead as permission to overtake. A solid stroke has already settled the passing decision against you, regardless of how clear the road looks at the moment.

    Source: Manual on Uniform Traffic Control Devices, marking 3B.01 (Solid Yellow Center Line).

24. 24. What does this warning sign tell a driver about the road ahead?

    

    1. Two roads merge together and traffic from the right will enter your lane.
    2. A side road enters from the right ahead at roughly a right angle. (correct)
    3. The road ahead ends at a T-intersection where you must turn.
    4. Roads cross the main roadway from both sides ahead.

    Why: The Side Road (Right) sign warns that a road joins the main roadway from the right ahead at roughly a right angle, so watch for vehicles entering or pulling out from that side road. The trap is the crossroad sign, which shows entering roads on both sides; a driver who glances at the diamond without noting that only the right arm is drawn reaches for the crossroad warning instead.

    Source: Manual on Uniform Traffic Control Devices, sign W2-2R (Side Road (Right)).

25. 25. You approach this No U-Turn sign and need to reverse your direction of travel. What does the sign require?

    

    1. Continue past and use a designated turnaround or another intersection. (correct)
    2. Complete the U-turn only when the road is clear of oncoming traffic.
    3. Complete the U-turn only from the leftmost lane on a green signal.
    4. Turn left here instead, since the sign forbids only left turns.

    Why: A No U-Turn sign forbids reversing direction by turning 180 degrees through this intersection or median opening, so a driver who needs to turn around continues past and uses a designated turnaround or another intersection where U-turns are allowed. Drivers who read the sign as a yield-style caution pick the answer that waits for a clear oncoming lane; the sign is a prohibition, not a caution about traffic, and a clear lane does not make the U-turn legal here.

    Source: Manual on Uniform Traffic Control Devices, sign R3-4 (No U-Turn).