WTF was up with the second rig?
It's called IIRC, Cop Car Light Fixation.
Drivers get so engrossed in looking at the pretty blinking lights that they run into the dang cop car.
Regards
alfa6 ;>}
When I worked the south Seattle freeway in the 80s, truck drivers would try and get as close to us as possible to blow off our smokey bear hats. They called it "dusting" a bear. It was a nationwide activity, and I recall a lieutenant back east getting killed by a truck driver trying to "dust" him.
Or the driver fell asleep, or he was swerving to avoid a four wheeler that cut him off, or the driver was stoned/drunk, or playing with his radio or computer, ad infinitum ad nauseum.