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North Dakota driving lesson · Signs, Signals & Markings

Warning, school & special signs

A 3-minute lesson from the North Dakota 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
15, 16

Warning signs tell you about a possible hazard ahead: a curve, a merge, a railroad, a slow tractor. They give you time to slow down before you get there. Treat every one as a cue to ease off and look.

Know the rule

Warning signs are yellow with a black legend. They warn of potentially hazardous conditions ahead so you can proceed with extra caution.

Handbook p. 15 ↗
Curve warning signs with advisory speed (composite)
Curve and turn signs with an advisory speed plate

Know the rule

Curve and turn signs give you time to slow before the curve. An advisory speed sign often goes with them, showing the maximum recommended speed for that curve or turn.

Handbook p. 15 ↗
Lane reduction warning signs (composite)
Lane reduction signs: Right Lane Ends, Lane Ends Merge Left

Know the rule

Lane reduction signs warn that the number of lanes drops ahead. Move safely into the proper lane.

Handbook p. 15 ↗

Other warning signs:

  • Added lane: the roadway gains a lane, and new traffic won't have to merge
  • Divided highway ends, or divided highway begins and traffic is separated
  • Two-way traffic on the road
  • Merging traffic: vehicles may move into your lane from the right
  • Intersection signs: watch for vehicles entering the flow of traffic
Handbook p. 15 ↗
Intersection warning signs (Y, T, crossroad) composite
Intersection warning signs
Railroad crossing ahead
Railroad Advance Warning sign

Know the rule

The Railroad Advance Warning sign is round with black letters on yellow. It means a railroad crossing is near; slow down so you can stop safely if a train is coming.

Handbook p. 16 ↗
Slow-moving vehicle emblem
Slow-moving vehicle emblem

Know the rule

The slow-moving vehicle sign is an orange triangle with a red reflective border. It goes on the rear of vehicles or towed equipment moving 25 mph or less. Slow down and use caution.

Handbook p. 16 ↗

Know the rule

Pedestrian and school signs may be fluorescent yellow-green or standard yellow. They mark a pedestrian crosswalk, a school or marked school crossing ahead, or a school crosswalk.

Handbook p. 16 ↗
School zone
School crosswalk sign

Special warning signs:

  • Yield Ahead
  • Bump: slow down to avoid loss of control
  • Traffic Signal Ahead
  • Deer Crossing
  • Bicycle symbol: watch for bicyclists
  • Slippery When Wet: slow down, the road is slippery when wet
Handbook p. 16 ↗

Put it into practice

You come over a rise and see an orange triangle with a red border on a hay wagon ahead. That vehicle is going 25 mph or less. Slow down early and follow at a safe distance until you can pass legally.

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 color are warning signs, such as those indicating a curve ahead?
  1. Blue with white letters
  2. Yellow with a black legend
  3. White with red letters
  4. Orange with a black legend

Answer: Yellow with a black legend

Warning signs are yellow with a black legend and alert drivers to hazardous conditions ahead.

Handbook p. 15 ↗
The Railroad Advance Warning sign is what shape and color?
  1. Octagonal, white on red
  2. Diamond, black on yellow
  3. Round, with black letters on yellow
  4. Triangular, red on white

Answer: Round, with black letters on yellow

The Railroad Advance Warning sign is round with black lettering on a yellow background, warning of a crossing ahead.

Handbook p. 16 ↗
What does a triangular, orange sign with a red reflective border mounted on the rear of a vehicle indicate?
  1. The vehicle is a farm exemption vehicle
  2. The vehicle is a school bus
  3. The vehicle or towed equipment travels 25 mph or less
  4. The vehicle is carrying hazardous materials

Answer: The vehicle or towed equipment travels 25 mph or less

This slow-moving vehicle emblem is mounted on vehicles or equipment traveling 25 mph or less.

Handbook p. 16 ↗
What does a round black-on-yellow sign warn you is ahead?
  1. A weigh station
  2. A railroad crossing
  3. A rest area
  4. A hospital entrance

Answer: A railroad crossing

The round, black-on-yellow Railroad Advance Warning sign indicates a railroad crossing is ahead.

Handbook p. 16 ↗
What does a diamond-shaped yellow sign with a deer symbol warn you of?
  1. Deer may be crossing the roadway ahead
  2. A speed bump is ahead
  3. A low bridge is ahead here
  4. A farm equipment crossing zone on this road

Answer: Deer may be crossing the roadway ahead

This special warning sign alerts drivers to watch for deer crossing the road.

Handbook p. 16 ↗
A slow-moving vehicle emblem is a round yellow sign.
  1. True
  2. False

Answer: False

The slow-moving vehicle emblem is a triangle, orange with a red reflective border, not round or yellow.

Handbook p. 16 ↗
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