The requirements are specific and non-negotiable. Class, endorsements, medical certification and hours-of-service rules all apply regardless of how short-handed anyone is, which is why 'someone with a license' isn't an answer and hiring the right qualification quickly matters.
Post the job stating the class and endorsements required, what's being driven and the dates, and CDL drivers whose service radius covers you are notified. Drivers list their class, endorsements and experience on their profiles, so you can filter before you message rather than after.
The need shows up as a truck that can't move. A chip truck full at eleven with nobody licensed to run it to the dump, a lowboy that has to get the crane across the state on Monday, or a driver out sick during the week you'd booked three removals — the crew is fine, the vehicle is fine, and the day stops anyway.
Get specific about the vehicle and the load, because the license follows them. Combination weight, air brakes, whether the trailer needs a doubles endorsement, and whether anything on board is regulated all change who is legally able to drive it. A driver who asks these questions back is one who knows the rules apply to them personally, not to the company.
Drivers are usually engaged by the day or the run. Verification is yours to do — check the license, endorsements and medical certificate before they drive, and confirm your insurance covers a hired driver on that vehicle. Treelign lists what drivers say about themselves and verifies none of it, so ask to see the documents.
For providers, plenty of drivers in this industry are also experienced ground crew or operators, and saying so doubles the jobs you match. Put your class and endorsements up front, note the equipment you've hauled, and mention if you're comfortable with oversize loads or multi-day runs.
Hauling reaches further than most tree work, so a wide service radius is realistic. Storm work in particular turns trucking into the bottleneck — travel dates put you in searches in an affected region for as long as you're working there.