Well Rony here is the way it is:
Drivers are dumbasses. They are oblivious to cones, flaggers, arrow boards, attenuator(crash trucks), lane markings, workers in lime green or Omaha orange vests, big orange trucks and yellow strobes.
They mean nothing to them.
Night closures multiply the problem 3 fold by higher speeds typically and tired/impaired drivers.
Red and blues on a old cruiser they pay attention to.
It used to be that only certified LE could operate and occupy them but the legislation has been changed and certified traffic control technicians are allowed to operate them. The cost involved with off duty LE is prohibitive.
It has been a few years since I worked a lane closure so they may be under some different regulations now.
After being in lane closures when idiot drivers have come into them I am glad to see red and blues in a taper.
I have had 4 coworkers killed in lane closures since 1991.
The retired cruisers are cheap insurance.