Bad Weather & Night Driving — Georgia
Georgia CDL practice test: 399 free practice questions (Based on the official driver handbook). The official format is not yet verified; check the official site before your test. Bad Weather & Night Driving: 26 questions.
Rain, snow, ice, fog and night driving: visibility, traction and headlight use.
This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.
| Topic / Metric | Value |
|---|---|
| Topic | Bad Weather & Night Driving |
| License test | Georgia CDL permit (CLP) knowledge tests |
| Topic questions | 26 (7% of 399 total) |
| Review status | This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines. |
Official handbook
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Questions (26)
1. If driving in a foggy area, you should not:
- Decrease your speed.
- Increase your speed. ✓
- Use your low beam headlights.
- Turn on your four-way flashers.
Answer: B. Increase your speed.
You should not increase your speed in fog; slowing down is what the handbook tells you to do. The fog section warns that visibility can drop quickly and that you should not count on the fog thinning out once you are in it. It tells you to slow down before you enter fog, to use low-beam headlights and fog lights for the best visibility even in daytime, and, if you can, to pull off at a rest area or truck stop until you can see better. The stopping-distance section backs this up: faster speed means longer braking distance and a harder impact. Speeding up works against both, so it is the thing to avoid.
2. Using the trailer hand valve while driving:
- Will help you turn safely.
- Will stop your trailer safely.
- Can cause a skid. ✓
- Is impossible.
Answer: C. Can cause a skid.
Using the trailer hand valve while driving can cause a skid. The handbook says the trailer hand valve (also called the trolley valve or Johnson bar) should be used only to test the trailer brakes. You should not use it in driving, because it creates a danger of making the trailer skid. The foot brake applies air to all the brakes on the vehicle, including the trailer, and the handbook states there is much less danger of a skid or jackknife with the foot brake alone. That is why the hand valve stays a testing tool, not a driving control.
3. Hydroplaning:
- Only occurs at extremely high speeds.
- Can occur at speeds as slow as 30 mph. ✓
- Happens most frequently when tire pressure is too high.
- Happens most frequently when tires have good tread.
Answer: B. Can occur at speeds as slow as 30 mph.
Hydroplaning can occur at speeds as slow as 30 mph when there is a lot of water on the road. The handbook says it does not take much water to cause hydroplaning, and that it can happen at speeds as low as 30 mph if there is a lot of water. So speed alone does not protect you; a slow-moving truck can still lose contact with the road on a wet surface. The same passage adds that low tire pressure and worn tread make hydroplaning more likely, which points to keeping tires properly inflated and checking tread.
4. When you need to stop in an emergency, you should:
- Lock the wheels and skid to a stop.
- Stop in a way that keeps your vehicle in a straight line. ✓
- Stop in a way that turns your vehicle.
- Expect your vehicle to slow down more quickly than usual.
Answer: B. Stop in a way that keeps your vehicle in a straight line.
When you need to stop in an emergency, you should brake in a way that keeps your vehicle in a straight line. The handbook's quick-stop section says to brake so the vehicle stays straight and can still be steered if you need to turn. It gives two methods, controlled braking and stab braking. With controlled braking you press as hard as you can without locking the wheels, keep steering movements small, and release and re-apply the brakes if the wheels lock or you need a bigger steering change. Staying straight keeps you able to steer around the problem and avoids a skid.
5. When driving in fog, you should:
- Use the windshield wipers.
- Use the low beam lights. ✓
- Use the high beam lights.
- Use the heater.
Answer: B. Use the low beam lights.
When driving in fog, you should use your low beam headlights. The fog section of the handbook tells you to slow down before entering fog and to use low-beam headlights and fog lights for the best visibility, even during the day. It also says fog is often unexpected and visibility can drop fast, and that the best advice is to avoid driving in it at all by pulling off into a rest area or truck stop. If you do keep going, low beams are the lights the handbook names for fog.
6. Rollovers are most likely to happen when:
- Drivers turn too fast. ✓
- Driver turn too slowly.
- It is windy.
- It is raining.
Answer: A. Drivers turn too fast.
Rollovers are most likely to happen when drivers turn too fast. The combination vehicles section states plainly that rollovers happen when you turn too fast, and it tells you to drive slowly around corners, ramps, and off ramps. It also explains that a higher center of gravity makes a truck easier to turn over, which is why cargo should sit as low as possible. Turning too fast is the behavior the handbook names as the cause, so slowing down in turns is the prevention it teaches.
7. If an approaching driver is using their high beam headlights, you should:
- Look directly at the headlights.
- Flash your high beam lights to remind the driver to switch to their low beams.
- Look to the right side of your lane until the vehicle has passed. ✓
- Pull to the side of the road until the vehicle has passed.
Answer: C. Look to the right side of your lane until the vehicle has passed.
8. When it is difficult for others to see your vehicle, such as at dawn or dusk, you can help other drivers by:
- Keeping your lights off.
- Turning your lights on. ✓
- Driving on the shoulder.
- Waving an arm out the window.
Answer: B. Turning your lights on.
When visibility is poor, you can help other drivers see you by turning your lights on. The handbook's section on communicating your presence says that at dawn, dusk, in rain, or snow you should make yourself easier to see. It explains that when your own view of other vehicles is poor, theirs of you is likely poor too, and it tells you to turn on your lights. It specifically calls for the headlights rather than only clearance or identification lights, and for low beams because high beams can bother people. Turning the lights on is the action the handbook gives for being seen in poor visibility.
9. Why are roads especially slippery right after it begins to rain?
- The water mixes with oil and grease on the road. ✓
- Roads are naturally slippery.
- Gravel often gets washed to the middle of the lane.
- Tires are not usually designed to drive in rain.
Answer: A. The water mixes with oil and grease on the road.
The road is especially slippery right after rain begins because water mixes with oil and grease left on the road by vehicles. The handbook's slippery-surfaces section lists the time just after rain begins as its own hazard. It says the water mixes with oil left by vehicles, making the road very slippery, and that continuing rain washes the oil away. That explains why the first part of a rain is the slick part. The same section says wet roads can double stopping distance and that you must slow down to stop in the same distance as on a dry road.
10. Roads are most slippery right after it begins to rain because:
- The water mixes with oil and grease on the road. ✓
- The roads are naturally slippery.
- The gravel gets washed to the middle of the lane.
- Some tires are not designed for rain.
Answer: A. The water mixes with oil and grease on the road.
Roads are most slippery right after rain starts because the water mixes with oil left on the road by vehicles. The handbook lists "just after rain begins" as one of the signs of a slippery road. It explains that when rain first starts, the water combines with oil that vehicles have left on the surface, and this makes the road very slippery. It adds that if the rain keeps falling, it washes that oil away, so the worst grip comes early in the storm, not later. That is why you slow down and leave yourself room to stop on a wet road.
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Last checked: 2026-10-17 · Verified from official source
Updated: · Based on the official driver handbook