Thetruckersreport.com offers six different free online CDL practice exams, which include the general knowledge test, air brakes test, combination vehicles test, tank vehicles test, hazardous materials test and double and triple trailers test. While this website offers practice exams, only the DMV can administer official licenses.
Taking the actual CDL exam can be difficult and time consuming, plus the test costs money, so it is wise to take some practice exams to prepare for the real test. Thetruckersreport.com has numerous other resources that would be useful to someone looking for a job as a CDL truck driver. In addition to the six practice exams available on this site, they provide a job search board for careers in the trucking industry, list of providers for truck insurance and comments forum.
There are numerous other CDL practice test sites available online, as well as practice tests available directly from the Department of Motor Vehicles. However, the DMV's website charges a small fee to access practice exams (while they have free sample questions, full practice exams cost money). Although the DMV practice test website doesn't have the same additional resources as Thetruckersreport.com, the DMV's practice test may be more accurate as it is provided by the same people who make the real test.