> I doubt a vehicle approaching from the rear has much of a
> chance of hearing a horn aimed forward of the tow truck.
Agreed. Had I been that driver, I would have focused
on getting out of the truck and diving over the divider.
Horn is useless in that scenario.
I saw the video on the four o'clock news and the tow truck driver didn't have a prayer, the Jersey barrier made it impossible to get out of the way.