Rain fog and snow — New York Permit Test
Rain fog and snow on the New York permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.
The rules
A bit of rain, snow or ice makes roads slippery, and wet leaves can be slippery and hazardous.
It takes very little water to break the grip. Wet leaves are as bad as ice.
FOG OR SNOW A bit of rain, snow or ice makes roads slippery.
In heavy rain tires can begin to ride on the water on top of the road pavement, which is called hydroplaning and can cause complete loss of traction and control of steering.
Once the tire is riding on water it is steering nothing at all.
In heavy rain, your tires can begin to ride on the water that is on top of the road pavement.
Hydroplaning normally occurs at higher speeds, but it can also occur if tires are tread worn or not inflated properly, and good tires with deep tread help to prevent it.
Tread is what pushes the water aside. Worn tires have nowhere to put it.
Hydroplaning normally occurs at higher speeds, but it also can occur if your tires are tread worn or not inflated properly.
New York State law requires a driver to turn on their headlights when weather conditions require the use of windshield wipers to clear rain, snow, sleet or fog, and daytime running lights do not qualify as headlights.
Wipers on means headlights on. It is the easiest version of the rule to remember.
New York State law requires you to turn on your headlights when the weather conditions require the use of windshield wipers to clear rain, snow, sleet or fog.
Headlights on high beam reflect rain, fog and snow as it falls, which makes it harder to see, so a driver should keep their headlights on low beam for better visibility in those conditions.
High beams light up the weather rather than the road. Low beam gets under it.
Headlights on high beams reflect rain, fog and snow as it falls.
Some vehicles have fog lights for use when heavy fog or similar hazardous weather restricts visibility; front fog lights can be amber or white and back fog lights must be red.
The rear fog light is there so the car behind sees you in time to slow.
Front fog lights can be amber or white in color. Back fog lights must be red and can be larger than the normal back lights - they will give advance warning of the presence of your vehicle to the drivers behind you.
On the test
What does the manual name as slippery besides rain, snow and ice?
Wet leaves on the road. It takes very little water to break the grip. Wet leaves are as bad as ice. New York State Driver's Manual, p.63: “FOG OR SNOW A bit of rain, snow or ice makes roads slippery.”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
- One payment, once — not a subscription. Nothing renews and there is nothing to cancel, for an exam you sit one time.
- Free to start: a 10-question test and the first section of cards. No sign-up and no account.
- Paying opens the rest of the cards, unlimited full-length practice tests, and retests built from exactly the questions you got wrong.
- Every level up to Prepared — 3 tests passed in a row.
- Do the work, fail the real exam, and we refund you.
Where these come from
Every rule here is checked against New York State Driver's Manual, published by the New York State Department of Motor Vehicles, and against the state code itself. Last checked 2026-09-15.