[NonValueAdded]

I doubt a vehicle approaching from the rear has much of a chance of hearing a horn aimed forward of the tow truck. With the back end setup of a tow truck, I doubt seatbelts or even an air bag would help too much in a high-speed crash. Asleep? impaired? who knows but it will come out eventually.

Always best to pull over into another lane when appreoaching emergency vehicles, the law in many places now. Was there police presence from the prior accident? Hard to imagine tow-truck ops being abandoned by the staties, especially on the high-speed side. Seems to me like the tow-truck driver should have put out flares in the absence of police support. Some blame is warranted there albeit of little help if the oncoming driver is out of it.

[Boundless]

> 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.