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View All PlansChicago is one of the largest transportation hubs in the United States. It is known for offering plenty of opportunities to truck drivers, but the Windy City also presents some challenges. Heavy traffic and tight urban spaces make it difficult for beginner drivers to navigate these roads, but improvement only comes with practice. Illinois also has many rural routes in the central and southern regions, where hauling agricultural products is common. These areas are less congested, but they may have fewer rest stops and services for truckers.
You must obtain a Tank Vehicles (N) Endorsement on your Commercial Driver’s License (CDL) if you want to drive tankers transporting liquids or gases in tanks whose individual capacity is larger than 119 gallons and whose aggregate capacity is at least 1,000 gallons. This endorsement is granted after passing a Tank Vehicles knowledge test. As you begin your learning journey, you will be introduced to the official 2025 CDL manual (Illinois CDL Handbook 2025). Every aspiring commercial driver must familiarize themselves with its content, but there are other online resources you can use also.
Our CDL Tanker Vehicles Endorsement practice test, specific to the state of Illinois, can help you pass the official Tank Vehicles knowledge test on your first attempt. It’s not magic, and there are no shortcuts. You must put in the effort necessary to master this subject, and we’re here to help you do it quickly. Consisting of 20 questions based on the CDL manual, each practice test has several features.
With unlimited attempts and no timer, you can begin training with this tool from your first day of studying. Since immediate feedback is provided after every question, you don’t have to worry about making mistakes during your first few attempts. We recommend recording the detailed explanation of each correct answer in a notebook, which you can use to memorize the meaning of each question. While there is no way to know which questions you’ll get in the Tank Vehicles knowledge test, you can prepare by consistently training with these practice tests.
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