Big Truck Accidents involving cars

The AJC article says "21 year old newlywed killed Sunday after her car was struck by a tractor-trailer on I-285."
When big trucks are involved in an accident with a much smaller car, who is more likely to be seriously injured or killed? The driver and passengers of the smaller car.
The article goes on to say that the truck driver was arrested for second degree vehicular homicide and improper lane change.
How about charges against the company that hired the driver? Are the police investigating the trucking company to see if they encouraged the driver to violate hourly driving rules?; Are they investigating the driver to see if he kept up his log properly?
Trucking accidents cause serious injuries to thousands of innocent victims each year.
The best course of action following a big truck accident is to promptly notify the trucking company to save evidence that would help the injured prove that safety was took a back seat to getting the load there.