roadwise.Open study app

Nevada driving lesson · Signs, Signals & Markings

Traffic signals

A 3-minute lesson from the Nevada 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
Signs, Signals & Markings
Checkpoint questions
6
Source pages
30

Traffic signals control intersections with steady lights, flashing lights and arrows. Each has a precise meaning, and a signal that's completely dark has a rule of its own.

Traffic signal head
Traffic signal

Steady lights

Steady lights
LightWhat to do
RedStop behind the line or crosswalk; stay stopped until green
YellowTurning red: stop if not yet in; if already in, clear it
GreenGo straight, right or left unless a sign forbids the turn
Handbook p. 30 ↗

Flashing lights & arrows

Flashing lights & arrows
SignalMeaning
Flashing redFull stop, go when clear — same as a stop sign
Flashing yellowProceed with caution
Red arrowYou may not make that movement; stop
Yellow arrowAbout to turn red — clear the intersection
Flashing yellow arrowYield to oncoming traffic and pedestrians, then turn
Green arrowGo that way; the turn is protected
Handbook p. 30 ↗

Know the rule

With no stop line or crosswalk, stop at a red light before entering the intersection. On yellow, never speed up to "beat the light."

Handbook p. 30 ↗

Know the rule

On a green arrow you must still yield to pedestrians, bicycles and traffic already in the intersection.

Handbook p. 30 ↗

Know the rule

Right on red: allowed unless a sign prohibits it. Stop completely, signal, and turn when pedestrians and traffic are clear.

Handbook p. 30 ↗

Know the rule

Left on red: only from a one-way street onto another one-way street with traffic moving left. Signal, stop completely and yield — unless a sign, arrow signal or police officer says not to.

Handbook p. 30 ↗

Know the rule

Traffic lights not working? Come to a full stop, yield to pedestrians and to vehicles already stopped or in the intersection, then proceed with caution.

Handbook p. 30 ↗

Put it into practice

You're on a one-way street in downtown Reno, stopped at a red light, and want to turn left onto a one-way street whose traffic flows left. No sign prohibits it, so after a complete stop and yielding to pedestrians and traffic, you may turn.

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 steady red traffic light mean?
  1. Yield then proceed
  2. Proceed with caution
  3. Stop
  4. Stop only if other traffic present

Answer: Stop

A red light means drivers must come to a complete stop.

Handbook p. 30 ↗
What does a flashing red light mean?
  1. Come to a full stop, same as a stop sign
  2. Slow down but don't stop
  3. Proceed with caution, no stop needed
  4. Yield only to pedestrians

Answer: Come to a full stop, same as a stop sign

A flashing red light has the same meaning as a stop sign.

Handbook p. 30 ↗
A driver is already in the intersection when the light turns yellow. What should they do?
  1. Stop immediately in the intersection
  2. Stop and yield to cross traffic
  3. Speed up to beat the light before it turns red
  4. Continue moving and clear the intersection safely

Answer: Continue moving and clear the intersection safely

If already in the intersection, continue and clear it safely; do not speed up to beat the light.

Handbook p. 30 ↗
When can a driver legally make a left turn on a red light in Nevada?
  1. From one one-way street onto another, moving left
  2. Any time no other cars are visible
  3. Only at intersections with a flashing red light
  4. Never, under any circumstance

Answer: From one one-way street onto another, moving left

Left turns on red are allowed only from a one-way street onto another one-way street moving left.

Handbook p. 30 ↗
A flashing yellow arrow means:
  1. Stop completely before turning
  2. The turn is fully protected, no yielding needed
  3. Do not turn under any circumstances
  4. Yield, then complete the turn when safe

Answer: Yield, then complete the turn when safe

A flashing yellow arrow means yield, then complete the turn when it's safe.

Handbook p. 30 ↗
When traffic control lights are completely out at an intersection, what must drivers do?
  1. Come to a full stop before proceeding
  2. Proceed at normal speed with caution
  3. Only vehicles on the right must stop
  4. Treat it as a yield sign only

Answer: Come to a full stop before proceeding

When lights are not working, drivers must come to a full stop before proceeding.

Handbook p. 30 ↗
Take the lesson checkpoint in the app

More in Signs, Signals & Markings