(ACEABLE) Chapter 4: Traffic Control Devices

What colors do traffic lights have?

Red, yellow, green.

What does a solid red light mean?

Stop completely.

Where is the red light located on signals?

Top (vertical) or left (horizontal).

Can you turn right on red?

Yes, after stopping, if clear and yielding to pedestrians.

When is a left turn on red legal?

One-way to one-way street.

What does a “No Turn on Red” sign mean?

Turning on red is prohibited.

What does a flashing red light mean?

Stop, then go when safe.

What does a solid yellow light mean?

Stop if safe; otherwise proceed cautiously.

Where is the yellow light located?

Middle of the signal.

What does a flashing yellow light mean?

Yield and proceed with caution.
📸 Yes

What must you do when turning left on flashing yellow?

Yield to oncoming traffic.

What does a flashing yellow arrow mean?

Left turn allowed, yield to traffic.

What does a green light mean?

Go when intersection is clear.

Where is the green light located?

Bottom (vertical) or right (horizontal).

What should you watch for at green lights?

Drivers running red lights.

What is an unprotected turn?

Turning while yielding to oncoming traffic.

What does a green arrow mean?

Protected turn with right of way.

What does RED on a sign mean?

Stop or prohibited.

What does GREEN on a sign mean?

Permitted movements or directions.

What does BLUE on a sign mean?

Motorist services.

What does YELLOW on a sign mean?

General warning.

What does ORANGE on a sign mean?

Construction or maintenance.

What does BLACK & WHITE on signs mean?

Regulations.

What does BROWN on signs mean?

Recreation or scenic areas.

What shape is ONLY for STOP signs?

Octagon.

What shape is ONLY for YIELD signs?

Triangle.

What shape warns of hazards?

Diamond.

What shape is for guide signs?

Horizontal rectangle.

What shape is for regulatory signs?

Vertical rectangle.

What shape warns of no-passing zones?

Pennant.

What shape is used for school zones?

Pentagon.

What shape warns of railroads?

Round.

What do warning signs do?

Warn of danger ahead.

What does a No Median Island sign mean?

No divider between traffic directions.

What does a Wet Road sign warn?

Slippery when wet.

What does Two-Way Traffic mean?

Expect oncoming traffic.

What does a Gradual Curve sign mean?

Road curves gently ahead.

What does a Crossroad Ahead sign mean?

Roads cross ahead.

What does a Reduced Lanes sign mean?

Fewer lanes ahead.

What does a T-Intersection sign mean?

Road ends; must turn.

What does a Y-Intersection sign mean?

Road splits.

What does Lanes Merging mean?

Traffic will merge.

What does a Zigzag sign warn?

Quick right-left turns.

What does Watch for Ice on Bridges mean?

Bridges freeze first.

What are Night Guide signs used for?

Show road direction at night.

What does Pass on Either Side mean?

You may pass on either side.

What does Grooved Pavement warn?

Rough surface for motorcycles.

What does Slow Down for Wheelchair Users mean?

Expect pedestrians with mobility aids.

What does a No Passing Zone sign mean?

Passing is prohibited.

What does a Curve Speed sign mean?

Suggested speed for curve.

What does a Sharp Curve Speed sign mean?

Slow more for sharp curve.

What does Highway Exit Speed mean?

Recommended exit speed.

What does Steep Downgrade warn?

Long downhill slope.

What are regulatory signs?

Laws drivers must obey.

What does One Way mean?

Traffic goes one direction.

What is an HOV lane?

Carpool lane.

What does Two Left Turn Lanes mean?

Both lanes may turn left.

What does Disabled Parking Only mean?

Only vehicles with placards allowed.

What does No Left Turn mean?

Left turns prohibited.

What does No U-Turn mean?

U-turns prohibited.

What does Do Not Cross Double White Line mean?

Crossing is illegal.

What does Protected Left on Green Arrow mean?

Turn when arrow is green.

What does Emergency Stopping Only mean?

Stop only for emergencies.

What does Left Lane for Passing Only mean?

Passing lane only.

What does Center Lane Left Turn Only mean?

Lane is for left turns only.

What does Left Turn Signal Ahead mean?

Green arrow coming.

What does Right Lane Must Turn Right mean?

Right lane must turn.

What do guide signs do?

Give directions and info.

What do highway lane indicator signs show?

Which lane to use.

What do travel info signs show?

Distance to destinations.

What do mileposts show?

Location by mile number.

What does a red X over a lane mean?

Lane closed.

What does a yellow X mean?

Lane closing soon.

What does a green arrow mean?

Lane open.

What do railroad warning signs mean?

Train crossing ahead.

What do broken yellow lines mean?

Passing allowed if safe.

What do broken white lines mean?

Lane changes allowed.

What is a center turn lane for?

Left turns only.

How far can you drive in a center lane?

200 feet max.

What do double yellow lines mean?

No passing.

What do solid lines mean?

No passing or crossing.

What are stop lines?

Where to stop at intersections.

What do crosswalk markings mean?

Pedestrian crossing area.

What are barrels used for?

Reduce crash severity.

What does a hearing-impaired flag mean?

Slow down and be cautious.

What must you do in construction zones?

Slow down and stay alert.

Who controls traffic in work zones?

Flaggers.

What must you do when a flagger signals?

Obey immediately.

What are channelizing devices?

Cones, barrels, barricades.

What happens to speeding fines in work zones?

Fines are doubled.

In Texas, must you stop before turning right on red?

Yes — complete stop first.
⚠️ Trap: “Slow roll” is wrong.

When turning right on red, who always has priority?

Pedestrians in the crosswalk.
⚠️ Trap: Cars ≠ priority.

Can you turn left on red in Texas?

Yes — one-way to one-way only.
⚠️ Trap: Two-way = illegal.

A green light means you can go immediately. True or false?

False — intersection must be clear.
⚠️ Trap: Green ≠ automatic right of way.

Who has the right of way on a green arrow?

The driver turning in the arrow’s direction.
⚠️ Trap: Still check for red-light runners.

Are you required to stop at a yellow light?

Yes, if you can do so safely.
⚠️ Trap: “Speed up” is wrong.

Is a yellow light a signal to stop suddenly?

No — only stop if safe.
⚠️ Trap wording shows up on exams.

If a sign’s shape is visible but color is faded, what do you rely on?

The shape.
⚠️ Trap: Shape > color.

What sign shape always means STOP?

Octagon.
⚠️ Guaranteed exam question.

What sign shape always means YIELD?

Triangle.
⚠️ Guaranteed exam question.