Because you don’t have a Class Whatever license that allows you to drive for hire?
No special license is required to drive for hire... Unless you're driving vehicles of a certain weight, or which carry a certain number of passengers.
This one always seemed odd to me, why truck drivers need a CDL but Uber drivers do not. Is there some weight threshold on commercial operations?
Commercial Drivers Licences - CDLs - allow you to drive vehicles of a particular weight, for the most part, with exceptions noted below.
Any vehicle with a maximum gross weight of greater than 26,000 pounds and/or a maximum trailer weight of greater than 10,000 pounds is a CMV (Commercial Motor Vehicle) and requires a CDL - Again, with exceptions noted below.
If you have a trailer greater than 10,000 pounds GVWR, you need a Class A.
If you have a vehicle with a GVWR over 26,000 pounds, with either a trailer at or below 10,000 pounds GVWR or no trailer, you need a Class B.
If you don't take the written test for, and the practical test with, a vehicle with air brakes, you'll get a restriction not allowing you to drive a vehicle with air brakes.
If you drive a vehicle under 26,000 pounds but with more than 15 passenger seats, you need a passenger endorsement.
Those last two are handled differently in different states. Here in Wisconsin, we have such a thing as a Class C CDL, so if you drive something like an airport shuttle with a GVWR of less than 26,000 pounds but with more than 15 passenger seats that's what you get... And a non-commercial driver's license here is Class D. In many states, though, the non-commercial licenses are Class C and they don't have a separate commercial under-26,000 license.
If your vehicle is not for hire - Say, if
@Ted DuPuis buys a bus and converts it to a private motor home - It is exempt from the CDL requirements. If you're going to do that, and your vehicle doesn't look like a motor home, it's not a bad idea to paint "NOT FOR HIRE" on the side lest you get incessantly pulled over for skipping the weigh stations.
I'm subject to the laws, I even follow the law. My question is that I've seen this argued time and time again about pilots getting money for flying. Other than "you can't because the rules say so" I've never seen the real reason. Don't assume because I asked the question that I'm flying people around for pay.
It's all about who you can kill.
If you're a student pilot, you're only allowed to kill yourself.
If you're a recreational or sport pilot, you can kill yourself plus one friend or family member.
If you're a private pilot, you can kill yourself plus several friends or family members.
If you're a commercial pilot, you can kill unsuspecting paying passengers.
If you're an airline transport pilot, you can kill a LOT of unsuspecting paying passengers, and fly hardware big enough that there's a significant chance of killing people on the ground who weren't even unsuspecting paying passengers.
As such, the standard of care on the part of the FAA increases dramatically as you climb that ladder. They don't really care if you kill yourself. If you kill 150 passengers and a neighborhood full of people on the ground, there will be people demanding action and lots of microscopes pointed in uncomfortable places, so they want to be pretty dang sure you're not going to do that.
The dividing line between commercial and private is really that they figure that people who know you can judge what kind of pilot you'll be with some level of success based on what they know about you. When you start flying strangers who are paying for the privilege, that onus is now on the FAA to ensure that you're a reasonably prudent pilot.