On a smaller scale, this type of fog accident has occurred numerous times on Afton Mountain here in Virginia. Folks just seem to ignore fog and what it might conceal ahead, and just keep on going until it's too late. What a tragedy. We understand that many of the un-injured motorists tried their best to help the injured.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.