Bad Weather & Night Driving — Massachusetts
Massachusetts CDL practice test: 429 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: 25 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 | Massachusetts CDL permit (CLP) knowledge tests |
| Topic questions | 25 (6% of 429 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
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Questions (25)
1. ____ is a thin layer of ice that forms on road surfaces.
- White ice
- Black ice ✓
- Soft ice
- Sharp ice
Answer: B. Black ice
Black ice is the thin layer of ice that can form on road surfaces. The handbook lists black ice among the signs of slippery roads. It describes black ice as a thin layer that is clear enough for the road to show through, so the pavement can look wet. It warns that when the temperature is below freezing and the road looks wet, you should watch for black ice. That matches the description in the question, while the other choices are not names the handbook uses for this road condition.
2. Hydroplaning usually occurs:
- When tires are properly inflated.
- At speeds under 15 mph.
- In areas where water collects on the road. ✓
- During the evening.
Answer: C. In areas where water collects on the road.
Hydroplaning usually occurs in areas where water collects on the road, because standing water lets the tires lose contact with the pavement. The handbook explains that when water or slush collects on the road, your vehicle can hydroplane, and it compares this to water skiing: the tires lose their grip and you may not be able to steer or brake. It also tells you to watch for signs of standing water such as clear reflections, tire splashes, and raindrops on the road. Low tire pressure and worn tread make it more likely, since shallow grooves cannot carry the water away.
3. When being approached by a vehicle using bright headlights while driving at night, you can avoid being blinded by the headlights by:
- Wearing sunglasses.
- Closing your eyes.
- Glancing to the side of road. ✓
- Using your high beams.
Answer: C. Glancing to the side of road.
4. 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.
5. During the skills test, if making a turn that requires a stop, you should:
- Skid to a stop.
- Stop after the stop line to get a better view.
- Allow your vehicle to roll.
- Keep the front wheels aimed straight ahead. ✓
Answer: D. Keep the front wheels aimed straight ahead.
When a turn requires you to stop, keep the front wheels aimed straight ahead while you are stopped. The on-road driving section of the handbook lists this as one of the things you must do during the skills test: do not let the vehicle roll, and keep the front wheels aimed straight ahead. It appears next to the rule about leaving a safe gap when you stop behind another vehicle. Keeping the wheels straight is also what the handbook's steering guidance points toward, since it wants your steering inputs small and the vehicle held in a straight line rather than drifting or turning while you sit still.
6. If a trailer begins to skid, the driver should:
- Lock the brakes.
- Release the brakes. ✓
- Steer in the opposite direction.
- Accelerate.
Answer: B. Release the brakes.
Release the brakes so the trailer wheels can regain traction. The handbook says that when a trailer starts to skid, you should release the brakes to get traction back. It explains that the trailer wheel brakes caused the skid, so using the trailer hand brake to try to straighten the rig is the wrong move. Once the trailer wheels grip the road again, the trailer will follow the tractor and straighten out.
7. When it is difficult to see, such as at dawn or dusk, what is the best way to make your vehicle more visible?
- Use your high beam lights.
- Use your low beam lights. ✓
- Use only your clearance lights.
- Do not use any lights.
Answer: B. Use your low beam lights.
When it is hard to see, use your low beam headlights, not just the clearance lights. The handbook's section on communicating your presence says that at dawn, dusk, in rain or snow you should make yourself easier to see because if you struggle to see other vehicles, they will struggle to see you. It tells you to turn on your headlights rather than only the identification or clearance lights, and to use the low beams, since high beams can bother people in the daytime as well as at night. So low beams are the recommended choice for poor visibility.
8. Hydroplaning occurs when:
- Tires lose traction with the surface of the road. ✓
- Tires have increased traction with the surface of the road.
- Front tires have more traction that rear tires.
- Front tires have less traction than rear tires.
Answer: A. Tires lose traction with the surface of the road.
Hydroplaning occurs when the tires lose traction with the road surface. The handbook describes hydroplaning as being like water skiing: water or slush collects on the road, and the tires lose their contact with the road and have little or no traction. When that happens, you may not be able to steer or brake. So the key fact is loss of traction between the tires and the road surface, not a change in which tires have more grip.
9. To correct a drive-wheel braking skid, a driver should do all of the following, except:
- Remove your foot from the brake pedal.
- Turn quickly in the direction of the skid.
- Countersteer after the vehicle is back on course.
- Accelerate. ✓
Answer: D. Accelerate.
The action to leave out is accelerating; a driver correcting a drive-wheel braking skid should not accelerate. The handbook's correction steps for a drive-wheel braking skid are to stop braking so the rear wheels roll again, turn the steering wheel quickly, and counter-steer as the vehicle comes back on course. It also warns against over accelerating, over braking, and over steering, because those can cause a skid. Accelerating during the correction is therefore the action that does not belong.
10. When driving on packed snow, you should reduce your speed:
- By at least one-half. ✓
- By about one-third.
- By about one-quarter.
- By about one-eighth.
Answer: A. By at least one-half.
On packed snow, reduce your speed by at least one-half. The handbook ties speed to traction: on a slippery surface it takes longer to stop and is harder to turn without skidding. It gives a specific cut for packed snow: reduce speed by a half, or more. That matches the answer calling for at least one-half. The same passage gives a smaller reduction, about one-third, for a wet road, so it is the packed-snow figure that supports going slower by half or more.
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Last checked: 2026-10-17 · Verified from official source
Updated: · Based on the official driver handbook