Bad Weather & Night Driving — Ohio
Ohio CDL practice test: 388 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: 20 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 | Ohio CDL permit (CLP) knowledge tests |
| Topic questions | 20 (5% of 388 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
Not yet verified
Advertisement
Questions (20)
1. The trailer hand valve should not be used while you are driving because:
- It will disconnect from the vehicle.
- You will stop the vehicle too quickly.
- It can cause a skid. ✓
Answer: C. It can cause a skid.
The trailer hand valve should not be used while driving because it can cause the trailer to skid. The handbook says the trailer hand valve, also called the trolley valve or Johnson bar, works the trailer brakes and should be used only to test them. It warns that using it while driving creates a danger of making the trailer skid. The foot brake sends air to all the brakes, including the trailer's, and the handbook says there is much less chance of a skid or jackknife when you use just the foot brake.
2. How do ice cream trucks become hazardous to other drivers?
- Ice cream trucks must be kept cold.
- Children often run toward an ice cream truck without looking for other traffic. ✓
- Ice cream trucks leave trails of water and ice on the roadway.
Answer: B. Children often run toward an ice cream truck without looking for other traffic.
Children make an ice cream truck hazardous because they often run toward it without looking for other traffic. The handbook lists someone selling ice cream as a hazard clue. It explains that children may be nearby and may not see you, and it also says children tend to act quickly without checking traffic. That combination is what makes the truck hazardous: the truck attracts children, and their attention may be on it rather than on other vehicles. The bank answer matches this idea by pointing to children moving toward the truck without looking for traffic.
3. Water that has collected on a roadway can cause:
- Hydroplaning. ✓
- Acceleration.
- Stopping.
Answer: A. Hydroplaning.
Water collected on a roadway can cause hydroplaning. When water or slush collects on the road, the handbook says your vehicle can hydroplane. The tires lose contact with the road and have little or no traction, so you might not be able to steer or brake. Another passage says surfaces where water collects create the conditions for hydroplaning. That matches the answer: the collected water causes hydroplaning.
4. On a slippery road, a driver should:
- Make turns as quickly as possible.
- Refrain from passing slower vehicles. ✓
- Stop quickly.
Answer: B. Refrain from passing slower vehicles.
On a slippery road, you should refrain from passing slower vehicles unless it is necessary. The handbook's slippery-surface section says to adjust speed to conditions and not to pass slower vehicles unless necessary. It also says to drive slowly and smoothly, take curves at slower speeds, and avoid braking harder than necessary. Because slippery roads reduce traction, passing adds unnecessary speed and movement when you should be keeping a steady, controlled pace. The bank answer matches that guidance.
5. Roads are especially slippery when it first begins to rain because:
- Water is always very slippery.
- The fresh rain mixes with oil on the roadway. ✓
- The water has nowhere to go.
Answer: B. The fresh rain mixes with oil on the roadway.
The correct answer is that the fresh rain mixes with oil on the roadway. The handbook says that right after rain starts, the water mixes with oil left on the road by vehicles, and this makes the road very slippery. It also says that if the rain continues, it will wash the oil away. So the first rain is the risky time because the oil is still there and gets mixed with the water, not because water by itself is always slippery or because it has nowhere to go. That is why the answer points to fresh rain mixing with roadway oil.
6. You are especially likely to encounter strong winds when:
- Coming out of tunnels. ✓
- Going into tunnels.
- Driving on shoulders.
Answer: A. Coming out of tunnels.
You are especially likely to meet strong winds when coming out of tunnels. The handbook's strong-wind section says strong winds make it hard to stay in your lane, and that this problem can be especially bad as you come out of a tunnel. That directly supports the answer. The passage does not tie the hazard to entering a tunnel or to driving on shoulders; it points to the moment you leave the sheltered tunnel and meet the wind.
7. Black ice is:
- Usually thick.
- Usually thin. ✓
- Not a hazard when driving.
Answer: B. Usually thin.
Black ice is usually thin — it is a thin, clear layer that lets you see the road underneath it. The handbook describes black ice as a thin layer that is clear enough to see the road underneath, which is why the road just looks wet. It also warns that any time the temperature is below freezing and the road looks wet, you should watch for black ice. So the layer itself is thin, not thick, and it is a real slipping hazard on cold, wet-looking pavement.
8. When driving under wet conditions, a lack of spray coming from the tires of other vehicles indicates that:
- Ice has formed on the road. ✓
- The pavement is dry.
- The spray is caught on the underside of the vehicle.
Answer: A. Ice has formed on the road.
A lack of spray from other vehicles under wet conditions means ice has formed on the road. The handbook puts this under slippery-surface driving. It says to watch for ice, particularly on bridges and overpasses, and that when other vehicles throw no spray, ice has formed on the road. It also suggests checking your mirrors and wiper blades for ice, since ice there makes an icy road likely. So the missing spray is a warning sign to slow down and treat the surface as slippery, not a sign that the pavement is dry or that spray is trapped underneath.
9. Hydroplaning usually occurs:
- When tires are properly inflated.
- When driving at speeds slower than 15 mph.
- In areas where water collects on the road. ✓
Answer: C. In areas where water collects on the road.
Hydroplaning usually occurs in areas where water collects on the road. The handbook says that when water or slush collects on the road, your vehicle can hydroplane. The tires lose contact with the road and have little or no traction, so you may not be able to steer or brake. It also says road surfaces where water can collect create conditions for hydroplaning, and you should watch for signs of standing water such as clear reflections and tire splashes. Low tire pressure or worn tread makes hydroplaning more likely.
10. In cool weather, as the temperature begins to rise and ice begins to melt:
- It is usually safe to drive.
- The road will become even more slippery. ✓
- Traction will increase.
Answer: B. The road will become even more slippery.
The road will become even more slippery as ice begins to melt. The handbook warns that when the temperature rises to the point where ice starts to melt, the road becomes even more slippery, so you should slow down more. It also explains that slight melting makes ice wet, and wet ice is much more slippery than ice that is not wet. That means melting ice does not make driving safer or improve traction; it makes the surface harder to handle, so you need to reduce speed and drive smoothly.
Advertisement
Source
Last checked: 2026-10-17 · Verified from official source
Updated: · Based on the official driver handbook