🎓 Prepared by students from Boğaziçi University

What Are Warning Traffic Signs (Red-White)?

Warning traffic signs use red-white striped backgrounds to alert drivers to hazards, obstacles, and road changes ahead. Unlike mandatory signs, they inform rather than command.

Short answer

Warning signs are red-white striped and alert drivers to hazards: construction zones, lane closures, sharp curves, pedestrian crossings, slippery roads, falling rocks, and narrow bridges. Reduce speed and stay alert.

Common Warning Sign Hazards
  1. 1
    Construction / Road Work
    Expect delays, lane changes, dust
  2. 2
    Sharp Curve Ahead
    Reduce speed before turning
  3. 3
    Slippery Road / Wet Surface
    Increase following distance, gentle braking
  4. 4
    Pedestrian Crossing
    Slow down; watch for people crossing
01

Step-by-step worked examples

Red-white striped sign shows construction ahead. Speed limit was 90 km/h. What do you do?

Sign type: warning (red-white striped)
Hazard: construction zone
Action: REDUCE speed, expect lane changes and workers
New speed: 40–60 km/h (per signs), or flow of traffic

A driver ignores a pedestrian-crossing warning sign and maintains high speed. What is the risk?

Sign: pedestrian crossing (red-white)
Driver action: ignores, maintains speed
Risk: pedestrian steps into path without warning
Consequence: collision, injury, legal liability

Slippery road warning (red-white chevron or wet symbol). Conditions ahead?

Sign type: warning (red-white)
Hazard: wet surface, ice, or loose gravel
Action: increase following distance (3+ car lengths), gentle braking
Speed: reduce to safe level for conditions
02

Flashcards

03

Quick quiz

Q1.Warning sign color and pattern?

Correct answer: C. Red-white striped = warning. Blue = mandatory. Yellow = caution. Red-white is most common hazard alert.

Q2.Pedestrian crossing warning sign; you're going 80 km/h. What do you do?

Correct answer: B. Warning signs require you to slow down and stay alert. Pedestrians can step into roadway suddenly.

Q3.Sharp curve warning with 40 km/h advisory. Must you follow it?

Correct answer: B. Speed advisories on curves are based on physics/safety, not traffic volume. Ignoring causes loss of control.

Q4.Red-white construction sign — delays expected. What is the primary risk?

Correct answer: B. Construction zones involve workers, equipment, and lane changes. Inattention causes collisions.
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04

Common mistakes

Warning signs are optional; I can ignore them if I see no immediate danger.Correct: Warning signs alert you to conditions you may not see. They must be respected.

A pedestrian-crossing warning doesn't apply if no pedestrians are visible.Correct: Pedestrians can appear suddenly. Warnings stay in effect always.

Slippery-road warnings only apply in winter or rain.Correct: Slippery surfaces (ice, gravel, wet leaves) can occur anytime. Check conditions after warning signs.

Warning signs suggest slowing down, but it's not mandatory.Correct: While not a command like blue signs, warnings indicate real hazards. Ignoring risks fines and crashes.

05

FAQ

What are warning traffic signs?

Warning signs are red-white striped and alert you to hazards, obstacles, and road changes ahead. They inform, not command.

What should you do when you see a warning sign?

Reduce speed, increase alertness, and prepare for the hazard indicated (curves, construction, pedestrians, slippery surface).

Can warning signs be ignored in light traffic?

No — traffic volume doesn't change the hazard. A slippery road or sharp curve is dangerous regardless of traffic.

Difference between warning (red-white) and mandatory (blue) signs?

Blue signs command action you must follow. Red-white signs warn of hazards requiring you to react (slow down, stay alert).

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