PennDOT - Pennsylvania Department of Transportation Driving in Hazardous Conditions Questions and Answers 1 — Questions and Answers
Question 1: According to Pennsylvania law, under which of the following circumstances are you required to use your vehicle's headlights?
- Only between sunset and sunrise.
- When driving in a properly marked construction zone.
- Any time your vehicle's windshield wipers are in use due to precipitation. (Correct answer)
- Exclusively when visibility is less than 500 feet.
Correct answer: Any time your vehicle's windshield wipers are in use due to precipitation.
Pennsylvania law (Title 75, Section 4302) requires drivers to turn on their headlights any time their windshield wipers are in continuous or intermittent use due to precipitation such as rain, snow, sleet, or mist. This is in addition to the requirements of using them between sunset and sunrise and when visibility is less than 1,000 feet.
Question 2: You are driving on a wet road and your vehicle begins to hydroplane. What is the correct immediate course of action?
- Slam on the brakes to regain traction quickly.
- Turn the steering wheel sharply in the opposite direction of the skid.
- Accelerate slightly to push through the water.
- Ease your foot off the gas pedal and steer straight. (Correct answer)
Correct answer: Ease your foot off the gas pedal and steer straight.
If your vehicle starts to hydroplane, you should not brake or turn suddenly, as this can cause a complete loss of control. The proper response is to take your foot off the accelerator, push in the clutch (if in a manual vehicle), and steer in the direction you want to go until your tires regain contact with the road surface.
Question 3: When driving in heavy fog in Pennsylvania, which headlights should you use and why?
- High beams, because they are brighter and cut through the fog.
- Low beams, because high beams will reflect off the fog and cause glare. (Correct answer)
- Parking lights only, to avoid blinding other drivers.
- Hazard lights, while driving at a reduced speed.
Correct answer: Low beams, because high beams will reflect off the fog and cause glare.
In foggy conditions, you should always use your low beam headlights. High beams will reflect off the water particles in the fog, creating a glare that can make it more difficult, not easier, to see the road ahead.
Question 4: A driver is traveling on a snow-covered road in Pennsylvania. Which of the following is an unsafe practice recommended against by PennDOT?
- Increasing following distance to allow more room to stop.
- Reducing overall speed to suit the conditions.
- Using cruise control to maintain a steady speed. (Correct answer)
- Avoiding sudden starts and stops to prevent skidding.
Correct answer: Using cruise control to maintain a steady speed.
PennDOT explicitly advises against using cruise control on snow-covered or icy roads. Cruise control can cause the wheels to spin at a constant rate, which can lead to a loss of traction and control if you hit a slippery patch.
Question 5: You are driving during a snow squall which results in a sudden 'whiteout' condition, severely limiting your visibility. What is the safest action to take?
- Stop immediately in your lane and wait for the squall to pass.
- Speed up to get through the whiteout condition as quickly as possible.
- Pull over to the side of the road, if you can do so safely, and turn on your hazard lights. (Correct answer)
- Follow the taillights of the vehicle directly in front of you as closely as possible.
Correct answer: Pull over to the side of the road, if you can do so safely, and turn on your hazard lights.
During a whiteout, PennDOT advises that you should not stop in the flow of traffic as it can cause a chain-reaction collision. The safest procedure is to slow down, and if possible, pull completely off the roadway and turn on your hazard lights to make your vehicle visible to others.
Question 6: Which of the following is a key reason PennDOT advises drivers to be extra cautious on bridges and ramps during cold weather?
- They are the last surfaces to freeze and the first to thaw.
- They are not treated with anti-skid materials.
- They often have lower speed limits than the main roadway.
- They can freeze before other road surfaces, creating patches of 'black ice'. (Correct answer)
Correct answer: They can freeze before other road surfaces, creating patches of 'black ice'.
Bridges and ramps freeze before other road surfaces because cold air circulates both above and below the elevated roadway, causing the pavement temperature to drop more rapidly. This can lead to the formation of ice, often 'black ice' which is hard to see, even when the rest of the road is just wet.
PennDOT - Pennsylvania Department of Transportation Driving in Hazardous Conditions Questions and Answers 1
According to Pennsylvania law, under which of the following circumstances are you required to use your vehicle's headlights?