LA Times reported that after the truck driver union was eliminated, the cost to transport products from LA Harbor dropped. At the same time, the amount of accidents in the neighborhood involving truck(s) jumped to 30%. In other word, the $ from the shipper to the drivers reduce, and the society picks up the bill.
It also generates a new business. Some truck drivers are regrooving their tires, meaning cutting grooves into bald tires. Regrooving is legal even if the steel wires/belt inside the tire are exposed but not cut.