Obtaining a Commercial Driver’s License (CDL) is a huge milestone for anyone looking to pursue a career in trucking or transportation. The written exam is a critical step in earning your CDL. It shows that you understand the rules and regulations of the road. If you’re preparing for the exam, approach your studies with the right mindset and strategy. Here are the top five study tips to help you prep for the CDL written exam.

1. Know the CDL Manual Inside and Out

The CDL manual is your best friend when it comes to CDL exam prep. Each state has its own version of the CDL manual, which covers everything from road signs and traffic laws to the specifics of operating large commercial vehicles. Make sure you download or obtain a copy of the manual for your state and dedicate time each day to read and study its contents.

  • Tip: Break down the manual into manageable sections. Focus on one section each day and take notes as you go to help retain the information.

2. Take Advantage of Practice Tests

Practice tests are an excellent way to test your knowledge and get a feel for the format of the actual written exam. Many online resources and apps provide practice CDL tests that mimic the types of questions you’ll encounter. Taking a practice test will help you identify areas where you need more study and can give you a confidence boost before the real exam.

In Arizona, you can go to The Arizona Department of Transportation to take the CDL Knowledge (written) exam in any Motor Vehicle Department office between 7:30am and 3pm with no appointment. Passing requires a minimum score of 80 percent. Learn more about a CDL license in Arizona in the FAQs on the department’s website.

  • Tip: Use a mix of online quizzes and official practice tests. Some states offer free practice tests on their Department of Motor Vehicles website.

3. Focus on the Key Areas

While the CDL written exam covers a broad range of topics, certain areas tend to be emphasized more frequently. First, focus on general knowledge, which covers basic traffic laws, vehicle control, and safety rules. Most states’ written exams usually consist of around 50 multiple-choice questions in this category. Second, spend time learning about air brakes, which can account for another 20 or more questions. You will want a good understanding of the operation, components, and safety checks for air brake systems. If you plan to drive a combination vehicle (tractor-trailer), make sure you know the specific rules for operating these vehicles.

Next, be mindful of the CDL classes and endorsements you might want to earn. Not all CLD licenses are alike. The CDL classes pertain to the size and passenger count of the truck you plan to drive. CDL endorsements are like add-ons to your CDL, which allow you to drive more specialized vehicles or specific cargo, such as hazmat cargo or school buses. Learn more about the various licenses and endorsements so you know how to accurately prep for the exam.

  • Tip: Create flashcards or study guides for these areas to reinforce your understanding of each topic.

4. Study with a Partner or Group

Studying with others can be incredibly beneficial, especially when it comes to reviewing complex topics. Find a study buddy or join a CDL preparation group to discuss topics, quiz each other, and share resources. Sometimes, explaining concepts to others or hearing their perspective can help clarify confusing material. The CDL program at ASC Technical Institute offers this type of comradery. Students at ASCTI get practical experience and a focused curriculum in a group setting. In just five weeks, you can earn your certification and be fully prepared to take the written CDL test.

  • Tip: Test a partner or study buddy regularly on road signs, regulations, and vehicle operations. Group study can help you stay motivated and on track.

5. Get Plenty of Rest Before the Test

No matter how well you prepped for the CDL exam, no amount of cramming will be helpful if you’re exhausted when it’s time to take the test. The day before your test, get plenty of rest and avoid overloading yourself with last-minute studying. A well-rested mind performs better than a tired one.

  • Tip: Eat a healthy breakfast on the day of the exam and make sure you’re hydrated. These simple steps can help improve focus and concentration.

Partner with ASCTI

Preparing for the CDL written exam is an important first step in your journey to becoming a professional truck driver. Knowing the CDL manual inside and out, taking practice tests, focusing on key areas, studying with others, and getting proper rest before the exam will increase your chances of success.

If you are ready to jump start your truck driving career, contact ASCTI. We’ve been helping students since 1986. Our CDL and Heavy-Equipment Operator programs will prepare you with the skills and knowledge you need to pass your exams. Good luck, and drive safely!

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