Alberta Class 7 Learner Knowledge Test · Question
What does a sign showing a car with wavy lines under it mean?
The yellow diamond-shaped sign showing a vehicle with wavy lines behind its tires warns drivers that slippery road conditions are possible, requiring them to re
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Question: What does a sign showing a car with wavy lines under it mean?
Answer options:
- Car wash ahead ✅ Slippery road conditions possible
- Bumpy road
- Hydroplaning area
Correct answer: Slippery road conditions possible
Explanation: The yellow diamond-shaped sign showing a vehicle with wavy lines behind its tires warns drivers that slippery road conditions are possible, requiring them to reduce speed in wet or icy weather. It does not indicate a car wash, which uses blue service signs, nor does it represent a bumpy road, which depicts double humps, or a specific hydroplaning area. According to the Alberta Driver's Guide, yellow warning signs alert motorists to potential physical hazards on the road ahead so they can adjust their driving behavior safely. Memorizing these standard hazard symbols is highly relevant for the Class 7 knowledge test, as traffic sign identification is a major component of the exam.
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Question explanations
- Two vehicles arrive at an uncontrolled intersection at the same time from different roads. Which vehicle shoul
- You are turning left at an intersection with a green light (no green arrow). What must you do?
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