There is a flow chart on page 1-1 of the Indiana CDL manual which explains if you need a CDL license. In general, you will need a commercial license if you drive:

1. A vehicle with a gross vehicle weight rating (GVWR) of 26,001# or more.
2. A truck and trailer with a gross combination weight rating (GCWR) of 26,001# or more, provided the trailer being towed has a GVWR of 10,001# or more.
3. A vehicle designed to carry 16 or more people including the driver.
4. Any vehicle required to display placards for hazardous materials.

Obtain a CDL manual from an Indiana Bureau of Motor Vehicles license branch or go to the state of Indiana web site at https://www.in.gov/bmv/2529.htm. Click on Frequently Asked Questions.

Once your license has been surrendered or expired more than one (1) year or your DOT physical has expired for more than one (1) year then you must start all over by getting a new physical, take the appropriate written tests, obtain a new CDL learners permit, and do a skills test.

No, not unless the vehicle you are driving is placarded for hazardous materials or is designed to carry 16 or more people, including the driver.

You must take the air brake written test at the license branch and obtain a new learners permit. Then you must skills test at a Third Party test site. When you pass then you must return to the license branch to change your license.

You must first obtain a new CDL learners permit, with the restriction removed. Then you must skills test in a manual transmission vehicle of the same class or higher as your current license.

You must first obtain a new CDL learners permit. If you had an "L restriction" (no air brakes), then take that written test first. Then you must skills test in a semi tractor/trailer. Preferably with a manual transmission. Otherwise you will get an “E restriction” (automatic transmission only).

Once you have your learners permit you can schedule a test. Call the site direct, or the best way is to click the link on our website, “Schedule a Test”, and follow the instructions. But be aware Federal regulations require that: 1) You cannot take your test until you have held your permit for 14 days and 2) the appointment must be scheduled at least two days in advance.

Once you have a CDL learner's permit and you are ready for the CDL skills test, you must make an appointment at one of the Third Party skills test sites in Indiana. You may obtain a list of the certified sites from your local license branch or go to http://www.in.gov/bmv/. And be sure to study the skills section in the back of your CDL manual (Sections 11, 12, & 13).

The CDL skills test cost is regulated by the state of Indiana. Current CDL testing fees can be found here - Indianapolis Test Site

On some endorsements (N tank, T doubles/triples, H hazardous materials) you are only required to take written tests at the license branch, complete the proper paperwork, and pay the appropriate fees. But if you are upgrading your license (going from class B to class A for example) or adding the P passenger or S school bus endorsements then you must take the appropriate written tests, obtain a learners permit, and pass a skills test to change your license.