State police want to know why a driver of a car apparently failed to obey the move-over law and rear-ended a State Farm help truck assisting a disabled van on 590.
It happened on the southbound shoulder, south of Empire Boulevard.
Trooper Mark O'Donnel says the car hit the truck, sending it into the van. The driver of the car was seriously injured. The driver of the help truck and the two people from the disabled van had minor injuries.