TX DMV Weather and Hazardous Conditions 3 — Questions and Answers
Question 1: Your vehicle begins to hydroplane on a wet Texas highway. The best immediate action is to:
- Brake firmly to regain traction
- Accelerate to spin the tires and grip the road
- Ease off the gas and steer straight until tires grip (Correct answer)
- Turn the wheel sharply toward the skid
Correct answer: Ease off the gas and steer straight until tires grip
Easing off the accelerator reduces tire speed gradually, allowing the tires to regain contact with the road surface without causing a spin.
Question 2: In icy conditions, the stopping distance for a vehicle traveling at 30 mph is approximately how many times greater than on dry pavement?
- Same — ABS compensates fully
- Twice as long
- Up to four times as long (Correct answer)
- Ten times as long
Correct answer: Up to four times as long
Ice reduces tire friction dramatically, making stopping distances up to four times longer than on dry pavement at the same speed.
Question 3: Which Texas weather phenomenon is most likely to create a 'black ice' hazard?
- Afternoon thunderstorms in summer
- Overnight temperatures dropping below freezing after daytime rain or drizzle (Correct answer)
- Blowing dust settling on warm pavement
- High humidity with no precipitation
Correct answer: Overnight temperatures dropping below freezing after daytime rain or drizzle
When wet pavement freezes overnight, the thin transparent ice layer called black ice forms and is nearly invisible against the dark road surface.
Question 4: When approaching a low-water crossing marked with a water depth gauge during heavy rain, you should:
- Cross quickly to avoid rising water
- Check the gauge and turn around if water is over the road (Correct answer)
- Honk to warn oncoming drivers and proceed
- Follow the vehicle ahead through the water
Correct answer: Check the gauge and turn around if water is over the road
Depth gauges exist to help drivers assess crossing safety; any water over the road surface at a crossing is considered dangerous and drivers should turn around.
Question 5: Driving through standing water can cause brake fade because:
- Water increases the coefficient of friction
- Water gets into the brake system and causes corrosion
- Wet brake pads and rotors reduce friction until they dry (Correct answer)
- Water causes tire pressure to drop suddenly
Correct answer: Wet brake pads and rotors reduce friction until they dry
Water on brake rotors and pads temporarily reduces friction efficiency, so drivers should gently apply the brakes after crossing water to generate heat and restore stopping power.
Question 6: In freezing rain conditions, bridges and overpasses ice over before flat road sections because:
- They are exposed to cold air from both above and below (Correct answer)
- They have no drainage and collect more water
- Vehicles drive faster on bridges increasing friction heat loss
- Bridge concrete absorbs moisture differently than asphalt
Correct answer: They are exposed to cold air from both above and below
Bridge decks are surrounded by cold air on all sides, unlike roads supported by the ground which retains heat, causing bridges to freeze first.
Question 7: A Texas driver encounters thick smoke from a wildfire drifting across the highway. The correct response is to:
- Increase speed to pass through faster
- Turn on high beams for maximum visibility
- Slow down, use low beams, and be prepared to stop (Correct answer)
- Flash headlights to warn other drivers and continue at normal speed
Correct answer: Slow down, use low beams, and be prepared to stop
Wildfire smoke can drop visibility suddenly; slowing down and using low beams gives you time to react and avoids the glare of high beams reflecting off smoke particles.
TX DMV Weather and Hazardous Conditions 3
Your vehicle begins to hydroplane on a wet Texas highway.
The best immediate action is to: