Pass Your CDL Permit General Knowledge Tests

To earn your Commercial Learner's Permit (CLP), you must first pass a series of federally mandated knowledge exams. This guide is your ultimate resource for mastering these critical tests. We'll provide a breakdown of the General Knowledge Test, Air Brakes Test, and Combination Vehicles Test so you can ace them on your first attempt.

What to Expect from Your CDL Permit Tests

Before you can move on to the practical, hands-on training, or in some cases, your Theory, you must prove you have a foundational understanding of commercial driving principles by passing a series of knowledge exams. These tests are administered at your local DMV or equivalent state licensing agency. They are computer-based and typically consist of multiple-choice questions.

The number of tests you take depends on the type of CDL you are pursuing:

For a Class A CDL Permit: You must pass the General Knowledge, Air Brakes, and Combination Vehicles tests.
For a Class B CDL Permit: You must pass the General Knowledge and Air Brakes tests.

General Knowledge Test

This is the most important and comprehensive test, required for all new CDL applicants. It is typically a 50-question exam, and you must achieve an 80% score (40 correct answers) to pass. The test covers a wide range of topics that every commercial driver needs to know:

Driving Safely: Defensive driving techniques, managing speed and space, and handling various weather conditions.

Vehicle Inspection: How to perform thorough pre-trip, en route, and post-trip inspections.

Basic Vehicle Control: Understanding shifting, backing, and other foundational maneuvers.

Transporting Cargo Safely: Principles of proper cargo securement, weight distribution, and load limits.

Regulations: Key federal and state rules, including Hours of Service (HOS) rules and drug and alcohol policies.

How to Prepare for Your CDL Permit Tests

Preparing effectively for these tests is essential to ensure you pass on your first attempt. Here are some of the best strategies:

Study the Official Manual: Each state publishes its own CDL manual, which is the primary source of all information on the tests. It's available online from your state's DMV website.

Take Online Theory Courses: An FMCSA-compliant online theory course, such as the one offered by ELDT.com, covers all the necessary material in an organized, self-paced format. ELDT theory training is a required step for all new drivers and can greatly reinforce the information you need to do better on your General Knowledge Tests. Since you are already studying for your CLP, this is an excellent way of getting the information you need to do better on your general knowledge tests and can lead to better scores.

Utilize Practice Tests: Taking practice tests is one of the most effective ways to study. It helps you become familiar with the format of the questions, identify areas where you need more study, and build confidence before you take the real exam. ELDT.com has a Permit Prep Exam on sale for $10, and it can be combined with your ELDT Theory.

Create a Study Schedule: Break down the manual into manageable sections and dedicate specific time each day to studying. Consistency is key to retaining information.