| Our tests are good for providing insight into the areas of knowledge which will appear on the actual test. The low air pressure warning signal is not working. Applicants must pass a 50-question test to obtain this licence. Entry doors should be in working condition. To become a truck driver, you can apply for a CDL at a local DMV office. Should ensure the weight of the cargo does not violate weight limits. To obtain your basic Class A CDL Commercial Learner Permit, you will take four (4) written examinations on the TXDPS computer using material from these books (CLP). . Read More. Depending on how fast you want to scale your driving career, you should always seek additional endorsements to open yourself up to more load-carrying options and more vehicle types. Look up the status of an active OL permit holder. To pass, applicants must answer 40 questions correctly.