Commercial vehicle drivers can do everything from operate passenger buses to semi-trucks, but only if they have the required Commercial Drivers License. In Texas, a CDL is available through the state license offices, but it does call for more documentation and examinations than you'll endure with a regular license.

Step 1.

Submit proof-of-identity documents like a valid Texas driver license, United States military identification card or birth certificate at a Texas Driver License office. Provide your Social Security Number to the license office. If you moved to Texas within the past 30 days, and you have a valid CDL from another state, turn that license in and apply for an original Texas CDL.

Step 2.

Complete the Commercial Driver License Self-Certification Affidavit. If you have a disease, like diabetes, you may need a Commercial Driver Fitness Determination certification. You will need a licensed physician to fill out that report. Mail or fax the completed certification and affidavit to the Texas Department of Public Safety.

Step 3.

Fill out a Texas Commercial Driver License Certifications and Record of CDL Examination with your name, street address, height, weight, date of birth, Social Security Number and home county. Submit your application, get photographed, fingerprinted, pass an eye exam and pay the application fee.

Step 4.

Pass a written CDL examination. Schedule a road test with a Texas Driver License office. Provide a copy of your vehicle registration and liability insurance on all automobiles you own. Inspect your vehicle. Take and pass the road test.