roadwise.Open study app

New York driving lesson · Traffic Control

Lane-use lights & traffic officers

A 2-minute lesson from the New York course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
2 minutes
Course unit
Traffic Control
Checkpoint questions
6
Source pages
31, 33, 49

Some highways hang special lights above the lanes to show which ones you may use at certain times. And whenever a traffic officer is directing traffic, the officer outranks every sign, signal and marking.

Lane use control signals
Lane-use light: steady red X
Lane use control signals
Lane-use light: yellow X
Lane use control signals
Lane-use light: green arrow

Lane-use control lights

Lane-use control lights
Light over the laneMeaning
Steady red XDo not drive in this lane
Steady yellow XMove out of this lane
Flashing yellow XThis lane may be used only for a left turn
Green arrowYou can use this lane
Handbook p. 31 ↗

Know the rule

Directions from traffic officers take precedence over signs, signals and pavement markings. If an officer signals you to stop at a green light, you stop; if an officer waves you through a red light or STOP sign, you go.

Handbook p. 33 ↗

People authorized to direct traffic:

  • Police officers
  • Fire police
  • Highway work area flag persons
  • School crossing persons
  • School bus drivers
Handbook p. 33 ↗

Know the rule

A work zone flagger has the same authority as a sign, so you can be ticketed for disobeying a flagger's directions.

Handbook p. 49 ↗

Put it into practice

The light ahead is green, but a police officer in the intersection holds up a hand for you to stop. Stop and wait for the officer's signal. The officer's direction overrides the green light.

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.

If a traffic officer directs you through a red light, what should you do?
  1. Stop and wait for the light to change anyway
  2. Ignore the officer since signals take priority
  3. Treat the red light as a stop sign first
  4. Follow the officer's directions, not the light

Answer: Follow the officer's directions, not the light

Directions given by traffic officers take precedence over signs, signals, or pavement markings.

Handbook p. 33 ↗
Which of these people can legally direct traffic under New York law?
  1. A highway work area flag person
  2. A tow truck operator at a crash
  3. A parking lot attendant
  4. A private security guard

Answer: A highway work area flag person

Police officers, fire police, highway work area flag persons, school crossing persons, and school bus drivers are authorized to direct traffic.

Handbook p. 33 ↗
An overhead lane light shows a steady red X above your lane. What must you do?
  1. Move out of that lane when safe
  2. Do not drive in that lane
  3. Use the lane only for a left turn
  4. Use the lane at reduced speed

Answer: Do not drive in that lane

A steady red X means do not drive in that lane; a steady yellow X means move out of it, and a flashing yellow X means left turns only.

Handbook p. 31 ↗
You are driving and a highway flag person motions you to stop. Do they have legal authority to require this?
  1. No, only police officers can direct traffic
  2. Yes, the same authority as a sign
  3. Only if a work-zone speed limit is posted
  4. Only on state highways, not local roads

Answer: Yes, the same authority as a sign

A flagger has the same authority as a sign, and you can be ticketed for disobeying their directions.

Handbook p. 49 ↗
Which of these must you obey over the other three?
  1. A red light
  2. A flashing red light
  3. A STOP sign
  4. A police officer

Answer: A police officer

Directions given by traffic officers take precedence over signs, signals and pavement markings.

Handbook p. 33 ↗
Directions from a traffic officer override a green traffic light.
  1. True
  2. False

Answer: True

A traffic officer's directions take precedence over signs, signals, and pavement markings.

Handbook p. 33 ↗
Take the lesson checkpoint in the app

More in Traffic Control