Those borderline rain/sleet/snow conditions are the worst.
I tried to get from Central PA to NY area for Thanksgiving. There was one of these pile ups on I-80 in the Poconos due to the interstate becoming a sheet of ice. I was stuck for around 8 hours in the same spot.
I got waived off I-93 by State troopers in Concord, NH, in the early 80s. When we stopped at a store in Concord we overheard two guys talking about three or four accidents on city streets, one of which we later passed. The reason we’d been waived off the road was because a mile ahead there was a 27-car pile up. The roads were all iced, and you wouldn’t know it unless you tried to brake.
“Those borderline rain/sleet/snow conditions are the worst.”
Watched this happening in real-time last winter, heading south on I-65, just behind the “icing line” moving south.
Cars coming north thought they were in light rain, then hit the ice at 70-80 miles an hour. It wasn’t pretty. Ended up missing my flight out of Louisville that day due to helping a trooper with an overturned minivan full of little kids.