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Ohio driving lesson · Rules of the Road

Traffic signals

A 3-minute lesson from the Ohio 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
Rules of the Road
Checkpoint questions
6
Source pages
13, 18, 21, 42

Signals are usually red, yellow and green from top to bottom, but some are single lights or horizontal. Know what each color means — steady and flashing — and what to do when the signal is dark.

Steady signals

Steady signals
SignalMeaning
RedStop behind stop line/crosswalk/intersection; wait for green
YellowAbout to turn red; use caution and prepare to stop
GreenGo with caution through the intersection if clear
Green arrowTurn in the arrow's direction without stopping
Handbook p. 13 ↗

Flashing signals

Flashing signals
SignalMeaning
Flashing yellowSlow down; proceed with caution; be ready to stop
Flashing redStop completely; go only when no crossing traffic
Handbook p. 13 ↗

Know the rule

At a flashing red signal, stop and yield to all traffic that does not have to stop.

Handbook p. 18 ↗

Know the rule

An inoperable (dark) traffic light is treated like a stop sign: yield the right-of-way and use caution entering the intersection.

Handbook p. 13 ↗

Know the rule

During a power outage, unless a law enforcement officer is directing traffic, treat a non-working signal as a four-way stop. Proceed carefully — other drivers may not stop.

Handbook p. 42 ↗
Non-working traffic signal
A dark signal is treated as a four-way stop

Know the rule

When your light turns green, pause before moving into the intersection. Don't count on others to obey signals.

Handbook p. 21 ↗

Know the rule

If you have a green light but traffic fills the roadway across the intersection, stop before the intersection and wait. Never enter and stop in the intersection.

Handbook p. 21 ↗

Know the rule

You must stop before entering an intersection if there isn't enough space on the other side for your vehicle — even when a signal gives you the right to proceed.

Handbook p. 18 ↗

Put it into practice

Your light turns green, but the cars on the far side are backed up to the crosswalk. Stay behind the stop line until there's room for your whole car on the other side — don't block the intersection.

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 does a red traffic light require you to do?
  1. Slow down and proceed with caution
  2. Stop only if other traffic is present
  3. Come to a rolling stop
  4. Stop and wait for green

Answer: Stop and wait for green

A red light means stop before entering the intersection and wait behind the stop line until it turns green.

Handbook p. 13 ↗
What does a yellow traffic light indicate?
  1. Red is coming — prepare to stop
  2. The light is about to turn green
  3. You must speed up to clear the intersection
  4. Stop at once, even if already in the intersection

Answer: Red is coming — prepare to stop

Yellow means the light is about to change to red; slow down and prepare to stop.

Handbook p. 13 ↗
What does a green arrow at a traffic signal indicate?
  1. You must stop before turning
  2. You may turn that way without stopping
  3. The intersection is closed to that direction
  4. Turning that way is not allowed

Answer: You may turn that way without stopping

A green arrow lets you turn in the arrow's direction without first stopping.

Handbook p. 13 ↗
How should you treat an intersection where the traffic signal is completely dead due to a power outage?
  1. Proceed at normal speed, since no one has the right-of-way
  2. Wait for a police officer before proceeding
  3. Like a stop sign — yield the right-of-way and use caution
  4. Treat it like a yield sign only

Answer: Like a stop sign — yield the right-of-way and use caution

An inoperable traffic light is treated the same as a stop sign — yield and proceed with caution.

Handbook p. 13 ↗
You have a green light, but traffic ahead fills the intersection with no room to clear it. What should you do?
  1. Stop before the intersection until it clears
  2. Enter the intersection and stop there until it clears
  3. Proceed since you have the green light
  4. Follow closely behind the car ahead into the gap

Answer: Stop before the intersection until it clears

You should not enter and block the intersection even with a green light — wait until there's room to clear it.

Handbook p. 21 ↗
What must drivers do at a flashing red traffic signal?
  1. Yield to all traffic that does not have to stop
  2. Proceed without stopping
  3. Treat it as a yield sign only
  4. Wait for it to turn solid red

Answer: Yield to all traffic that does not have to stop

At a flashing red signal, stop and yield to all traffic that does not have to stop.

Handbook p. 18 ↗
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