What kind of certification do you need to drive a semi truck?

A commercial driver's license (CDL) is required to drive a semi truck in the United States. To obtain a CDL, you must pass a written test, a vision test, and a skills test. The written test covers topics such as safe driving practices, vehicle maintenance, and the rules of the road. The vision test checks your eyesight and depth perception. The skills test assesses your ability to maneuver a semi truck safely.

In addition to passing the written, vision, and skills tests, you must also meet certain eligibility requirements to obtain a CDL. These requirements include:

* Being at least 21 years old

* Having a valid driver's license

* Passing a physical examination

* Providing proof of residency

* Paying the application fee

Once you have met all of the eligibility requirements and passed the required tests, you will be issued a CDL. A CDL is valid for four years and must be renewed every four years.

In addition to a CDL, you may also need to obtain special endorsements to drive certain types of semi trucks. For example, you may need an endorsement to drive a tanker truck or a hazardous materials truck.

The requirements for obtaining a CDL may vary from state to state. For more information, visit the website of your state's department of motor vehicles.