This is hard to understand. The Florida Highway Patrol had closed the road earlier in the evening because of a combination of fog and smoke from a wildfire that had been burning for days. The smallish fire had burned a total of 65 acres by Sunday morning. According to numerous news accounts motorists piled one by one into the blinding mix of fog and smoke directly into other trucks and cars.
Why was the Interstate open? Where were the escorts or pilot vehicles? In 2008 a similar crash with numerous fatalities occurred on Interstate 4, just south of the Sunday crash site due to smoke from a wildfire.
I’m baffled how this wildfire was allowed to burn for days or weeks. Even allowing this may be bog material there is no reason a roadside fire with associated smoke drift should be allowed to burn unabated. I know for fact in California the fire would have been cold as soon as possible, no question. Additionally in California there is close communication between state fire officials and California Highway Patrol officials. Fire and CHP will never open a roadway until conditions are considered safe.