"possible solution to the driver shortage and regulatory constraints faced by freight haulers across the country" - mmm, every industry is facing worker shortage huh -.-
Unemployment is very low right now. However, the most accurate statement is always, "shortage of people that have the qualifications we want that are willing to work for the payment we're offering."
It doesn't really paint an accurate picture of how many are out of work, but getting by through alternative or illegal-quasi-legal means.
It also in no way measures the number of jobs a defined unit of work can supply, or whether the job itself creates enough of a return to be economically feasible to the doer.
It also in no way reflects that many jobs mow push for pre-acquired qualifications, which cost money, and lock out potential workforce.
No one wants to measure any of that. That leads to awkward questions.