So I didn't want to jinx this by mentioning it beforehand, but as coincidence would have it, I had a court date with one of my daughters this afternoon for the ticket she got when she totaled one of our cars in January. She had her license for around three months then and was headed to school around 15 minutes before sunrise when she hit black ice around the corner from our house, less than 1/10 of a mile away. She had just walked out the door and I told her, as I did every morning, "Drive slow, don't rush, it's not worth it. Be safe. I love you." She replied "I know, I will, love you, too," and then the phone rang literally one minute later with her in hysterics because she had driven off the road and into the woods. I'll never forget the tone of her voice and how scared I was that she had been hurt...or that she had hurt someone else.
Of course I instantly thought she must have been speeding because she was running late for school, and/or that she had been on her phone. And when we saw how far into the woods she had gotten and deduced that she must have been airborne in the car for around 20'-30' before landing, we couldn't believe that she hadn't gotten hurt. The sun came up in the meantime and the black ice disappeared, but a minute later a town truck came by to spread salt and sand. Then we started getting texts from many of our neighbors who had just driven past, all reporting that it was like a sheet of ice in the area that morning. Then we heard about two other accidents at the same time within a few miles. It quickly became apparent that she had hit black ice and had no idea what to do because she had never driven on it before and there had been no warning that morning. Nonetheless, the police officer ticketed her for speeding and failure to stay on the right side of the road. The car was totaled because of the damage to the undercarriage when it landed.
Thankfully, I got the ticket nolled today, because that would have been quite the hit on our insurance.
You can teach them to drive on snow, but all bets are off with black ice. I think the best thing you can do is try to be aware when it is present and do everything you can to keep them from driving then, period, until it is treated or goes away.
I stilll can't go by the scene without thinking about it. We were very, very blessed. In a cruelly ironic twist, the person who lives in the house across the street from where she crashed lost his then-teen daughter on that very same road in a one-car accident around 20 years ago. As they say in Spinal Tap, "too much duck_____g perspective."