glenb said it
The Rail Authority and Heavy Trucking Industry also have one. Look at how simply the trucking industry tackled it
The problem is the trucking industry hasn't been able to cheapen the value their drivers add to the organization by claiming the truck does all the work. We are still being defeated by the notion that we sit there and do literally nothing. I've been told many a time that my job is easy and I'm overpaid; that thinking is ubiquitous in the public arena.