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Texas driving lesson · Signals, Signs & Markings

Traffic signals

A 3-minute lesson from the Texas course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Signals, Signs & Markings
Checkpoint questions
6
Source pages
31

Traffic signals keep intersections orderly, but they aren't the top authority: a law enforcement officer directing traffic overrides them. Know exactly what each light, flashing light and arrow lets you do.

Know the rule

Obey an officer directing traffic at all times, even if told to do something normally considered against the law.

Handbook p. 31 ↗

Know the rule

Steady red: stop before the crosswalk or intersection. You may turn right unless prohibited, and turn left if both streets are one-way unless prohibited, yielding to all pedestrians and other traffic lawfully in the intersection.

Handbook p. 31 ↗
Flashing red light
Flashing red light

Know the rule

Flashing red: stop completely before the crosswalk or intersection, then proceed when safe. Traffic on the cross road may not have to stop.

Handbook p. 31 ↗

Know the rule

Steady yellow: the light is about to turn red. Stop before the nearest crosswalk if you can do so safely; if you can't stop safely, proceed cautiously through the intersection.

Handbook p. 31 ↗

Know the rule

Flashing yellow: slow down and proceed with caution.

Handbook p. 31 ↗

Know the rule

Flashing yellow arrow for left turns: you may turn left, but must yield to oncoming traffic.

Handbook p. 31 ↗

Know the rule

Steady green: go if it's safe. You may go straight or turn unless another sign or signal prohibits it. Watch for cars and pedestrians in the intersection and for reckless drivers racing to beat a red light.

Handbook p. 31 ↗
Signal with turn arrow
Green arrow with a red light

Know the rule

Green arrow shown with a red light: proceed carefully in the arrow's direction after yielding to other vehicles and pedestrians.

Handbook p. 31 ↗

Know the rule

Left turn on a green light (no arrow): allowed, but yield to all traffic approaching from the opposite direction.

Handbook p. 31 ↗
Left turn yield on green
Left Turn Yield on Green sign

Put it into practice

Your light turns yellow just as you reach the crosswalk at 40 mph. Braking hard now wouldn't be safe, so you continue cautiously through. If you'd been 150 feet back, you should stop before the crosswalk.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

What must you do at a steady red traffic light before turning right (where allowed)?
  1. Slow down only, without stopping
  2. Stop before the crosswalk or intersection
  3. Yield only to oncoming traffic, no stop needed
  4. Stop only if pedestrians are present

Answer: Stop before the crosswalk or intersection

At a steady red light, you must stop before entering the crosswalk or intersection, then may turn right if permitted.

Handbook p. 31 ↗
You reach an intersection with a flashing red light. How should you treat it?
  1. Slow down and go without stopping
  2. Treat it as a green for cross traffic
  3. Stop completely, then go when safe
  4. Stop only if cross traffic is present

Answer: Stop completely, then go when safe

A flashing red light requires a complete stop, then proceeding when it's safe.

Handbook p. 31 ↗
What must a driver do when facing a flashing yellow arrow for a left turn?
  1. Stop and wait for a green arrow
  2. Turn left with no yielding required
  3. Treat it as a stop sign
  4. Turn left, but yield to oncoming traffic

Answer: Turn left, but yield to oncoming traffic

A flashing yellow arrow allows a left turn but requires yielding to oncoming traffic.

Handbook p. 31 ↗
What does a steady yellow light mean?
  1. Stop if you can do so safely
  2. Speed up to clear the intersection
  3. It functions exactly like a red light
  4. Proceed as if it were green

Answer: Stop if you can do so safely

Steady yellow warns you the light is changing; stop safely if you can, otherwise proceed cautiously.

Handbook p. 31 ↗
A traffic officer is directing traffic in a way that conflicts with the signal. What should you do?
  1. Obey the signal instead, since it's the law
  2. Obey the officer's directions
  3. Stop and wait until the conflict is resolved
  4. Follow whichever instruction came first

Answer: Obey the officer's directions

Drivers must obey a law enforcement officer directing traffic, even over a conflicting signal.

Handbook p. 31 ↗
A green arrow shown with a red light lets you go without yielding to other vehicles or pedestrians.
  1. True
  2. False

Answer: False

With a green arrow and a red light you may proceed in the arrow direction only after yielding to other vehicles and pedestrians.

Handbook p. 31 ↗
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