California DMV Special Driving Conditions 1 — Questions and Answers
Question 1: When driving in heavy fog in California, you should use:
- High-beam headlights for maximum visibility
- Low-beam headlights or fog lights (Correct answer)
- Hazard lights while driving at speed
- No lights to avoid glare reflection
Correct answer: Low-beam headlights or fog lights
Low-beam headlights or dedicated fog lights project light downward and forward without reflecting back into your eyes in foggy conditions.
Question 2: When driving in rain after a long dry spell in California, roads become especially dangerous because:
- Rainwater reduces tire tread
- Oil and grease mix with water to create slippery conditions (Correct answer)
- Road signs become harder to read
- Headlights are less effective
Correct answer: Oil and grease mix with water to create slippery conditions
After dry periods, oil and grease accumulate on road surfaces; when first wetted, this mixture creates extremely slippery conditions before rain washes it away.
Question 3: What is hydroplaning and when does it occur?
- Engine flooding during river crossings
- Loss of tire traction when tires ride on a layer of water rather than the road surface (Correct answer)
- Aquaplaning caused only by standing flood water
- Reduced braking caused by wet brake pads
Correct answer: Loss of tire traction when tires ride on a layer of water rather than the road surface
Hydroplaning occurs when tires travel faster than water can be displaced, causing them to ride on a film of water and lose contact with the road.
Question 4: To prevent or recover from hydroplaning in California, you should:
- Apply the brakes firmly
- Accelerate to push through the water
- Ease off the accelerator and hold the steering wheel straight (Correct answer)
- Turn sharply to reach dry pavement
Correct answer: Ease off the accelerator and hold the steering wheel straight
To recover from hydroplaning, gradually ease off the gas without braking and keep the steering wheel steady until the tires regain road contact.
Question 5: When driving in strong crosswind conditions in California, the greatest danger is:
- Increased fuel consumption
- Being pushed out of your lane, especially on bridges or in high-profile vehicles (Correct answer)
- Windshield cracking
- Reduced headlight effectiveness
Correct answer: Being pushed out of your lane, especially on bridges or in high-profile vehicles
Strong crosswinds can push vehicles — especially trucks, SUVs, and motorcycles — sideways, making lane control difficult, particularly on exposed bridges.
Question 6: When driving through standing water of unknown depth in California, you should:
- Drive through at normal speed to minimize time in the water
- Never drive through standing water of unknown depth (Correct answer)
- Drive at 15 mph or slower
- Only drive through if another vehicle did so first
Correct answer: Never drive through standing water of unknown depth
You should never attempt to drive through standing water of unknown depth — just 6 inches of moving water can knock a person down and 12 inches can carry a vehicle.
California DMV Special Driving Conditions 1
When driving in heavy fog in California, you should use: