When it's an air brake equipped vehicle operating on a for-hire basis which meets any of the following criteria:
In the US, unless you have a Commercial Drivers Licence (CDL), you don't need any additional endorsements to operate a non-commercial vehicle with air brakes. If you're going for a CDL, then you need to take and pass the written test for air brakes, as well as road test on a vehicle equipped with air brakes.
Not for a Class C, unless you need to road test on a vehicle with air brakes.
There is no air brake endorsement. If a CDL driver does not complete and pass the written Air Brakes test and perform their road test in an air brake equipped vehicle, they receive a restriction which prohibits them from operating a commercial vehicle with air brakes.
If you're in the US, there is no such thing as an air brake endorsement. CDL drivers receive a restriction which prohibits them from operating a commercial motor vehicle equipped with air brakes if they do not pass both the written air brakes test and do their road test in a vehicle equipped with air brakes.
The type of brakes used in a vehicle does not determine whether or not the vehicle requires a CDL.A commercial use vehicle requires a CDL when:It is a single vehicle or combination vehicle with a Gross Vehicle Weight Rating or Gross Combination Weight Rating of more than 26,000 lbs.It is transporting quantities of hazardous materials which requires the display of hazmat placards, regardless of the vehicle's weight rating.It is a bus designed to transport more than 15 persons (including the driver), regardless of the vehicle's weight rating.If your vehicle matches any of the above criteria, then you need the appropriate class of CDL and you will need to take the written test for air brakes, as well as conduct your road test in an air-brake equipped vehicle. Otherwise, you will receive a restriction on your CDL which prohibits you from operating a commercial vehicle equipped with air brakes or air-over-hydraulic brakes.If your vehicle does not meet any of the above criteria, then a CDL is not required.
There is no actual air brake endorsement - if you test for a Commercial Drivers Licence (CDL) and either fail the written portion, don't road test in a vehicle equipped with air brakes, or both, you get an L restriction, prohibiting you from operating a commercial vehicle with air brakes. The only times you need a CDL for a vehicle or combination under 26,000 lbs. GVWR is if it's either carrying hazardous materials in a quantity sufficient to require placarding, or designed to carry more than 15 persons (including the driver). In the case of the former, you would need at least a Class C CDL with Hazardous Materials endorsement, and air brakes (if the vehicle is so equipped), as well as the K endorsement for a tanker, if the vehicle is so equipped. For the latter, you would need a P endorsement for passengers (S for school bus), as well as air brakes, if the vehicle was so equipped. If the vehicle you're operating doesn't fall into the criteria of requiring a CDL class licence to operate it, you don't need to be tested for air brakes.
The front brakes on any vehicle do most of the stopping. When you apply the brakes the weight shifts to the front of the vehicle. For this reason the front brakes are needed more than the rear. Try stopping a vehicle with just the hand brake which applies only the rear brakes.
Good luck trying to get such an endorsement, because such a thing does not exist on US licenses.The answer is no. Someone who holds a CDL must complete and pass the written air brakes test and perform their road test in a vehicle so equipped, otherwise they get a "no air brakes" restriction which prohibits them from operating a commercial vehicle equipped with air brakes, but doesn't prevent them from operating a vehicle exempt from CDL requirements which is equipped with air brakes.
If the commercial vehicle requires a CDL to drive it, you do.
Air brakes have absolutely ZERO determination in whether or not a vehicle requires a CDL.
At a minimum, a Class C Commercial Drivers Licence with Passenger endorsement and no air brake restriction (if the vehicle is equipped with air brakes). If the vehicle has a GVWR of over 26,000 lbs (which is a bit unlikely with an 18 passenger vehicle), then a Class B CDL would be required, again with the Passenger endorsement and without a restriction on air brakes, if the vehicle were so equipped.
To change license plates on your vehicle, you will need to visit your local Department of Motor Vehicles (DMV) office. You will need to bring your current license plates, registration documents, and any required fees. The DMV will provide you with new license plates and update your vehicle registration accordingly.