In this example, the first photo shows that a natural avalanche has blocked the highway. A car ran into the avalanche debris pile. There were no injuries to the occupants and the car was not damaged. The next photo shows the larger danger. Traffic is now backed up under another avalanche path.
People then tend to get out of their cars.
The avalanche hazard area extends from the debris pile back to the rear of the second two trucks. Motorists out of their vehicles are much more likely to be killed by a second avalanche than if they remain in their vehicles. You will notice that when the second picture is taken, only those authorities that are necessary to deal with the situation are out of their vehicles. There is also an avalanche watch posted. Traffic will be immediately shut off at a safe location to prevent more cars from entering the hazard area.