Could you still drive single axle truck with air a l?

No, it is not legal to drive a single axle truck with air brakes without a CDL. Air brakes are a type of braking system that is used on heavy vehicles, such as trucks and buses. They are more powerful than hydraulic brakes, which are used on most cars and light trucks. In order to safely operate a vehicle with air brakes, you must have a Class A or Class B commercial driver's license (CDL). The requirements for obtaining a CDL vary from state to state, but they typically include passing a written test, a vision test, and a driving skills test.