[jobjobjobjob]

In Ontario and it's very common to be driving on packed snow for a few days after new snowfall. You get barely any road markings at all. You just use common sense and memory to try and act like the lane dividers, turning lanes, stop lines are still there. It must be the same in many parts of the US as well. With winter tires and the right attitude its perfectly fine!

But yeah if you can't see the road markings due to an active blizzard, flip the hazards on, follow the tail lights ahead of ya, and stay in the middle of were the road should be.

[jacquesm]

I've lived there. St. Josephs Island to be specific. I also went to the funeral of more than one person that 'didn't make it' through that kind of condition.

[xattt]

> You just use common sense and memory to try and act like the lane dividers, turning lanes, stop lines are still there.

You’re absolutely right. You just do what you need to do.

Having some form of inertial navigation supplemented by GPS and visual odometery from features that stick out from the side of the road (like a road sign; memorized by the vehicle on past drives) would help a lot. A HUD UI could show road markings on “slice” of the road.

Call it “low viz aid” or something catchy.

In my case, I was driving on a rural road just before dusk without street lighting where there is nearly no traffic on a good day. Low-beam headlights were reflecting off the flakes and high-beams were obviously out of the question.

Risk of a collision with another vehicle was low, but going into the ditch was possible if you didn’t know the bends of the road.

Yes, these are dangerous conditions, but I started off driving in rain and didn’t anticipate the switch to snow mid-drive.

[fennecfoxy]

But what about a curvy 2-lane road with oncoming traffic on the other side? How do you ensure you not hit kerb the car if you can't see the kerb due to snow?

[xattt]

You slow down enough that you can confidently maneuver by the curb and the other vehicle.

[throwaway290]

> You just use common sense and memory to try and act like the lane dividers, turning lanes, stop lines are still there

Isn't this what road signs are for?

[krig]

Here in Sweden, even the road signs are frequently covered by snow. I’m sure it’s a similar situation in Canada!

[throwaway290]

Interesting. In Russia roads are entirely covered by thick layer of hardened snow for 4+ months (intercity often more, especially up north) so I'm not even sure markings are normative but signs have to be visible. They tell you changes in the number of lanes and directions etc (something like https://www.drom.ru/pdd/pdd/sign_5_15_2/). At first it was unusual to see such reliance on road markings in other countries