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View All PlansIt’s early morning in Iowa. The sky is turning orange, and you’re behind the wheel of a powerful semi-truck. Your trailer is full of grain from a nearby farm, fresh from the harvest. You start the engine and begin your drive to a food factory. The roads are quiet, just fields and small towns around you. Every mile you drive helps keep food moving across the country. This is what it’s like to work as a commercial driver in the Hawkeye State. With a Commercial Driver’s License (CDL), you can follow this career path and become part of the essential workforce that keeps America running.
To get a CDL, you must meet certain requirements and pass several exams. The official written knowledge test consists of 50 multiple-choice questions based on the official National CDL Manual (Iowa CDL Handbook 2025). This resource describes the various aspects of commercial driving theory in detail, including safe driving practices and the safe operation of combination vehicles. It even includes detailed checklists for pre-trip inspections that match the specific class of vehicle you’re preparing to drive.
If you are interested in a Class A CDL, it’s important to understand the additional requirements. You must score 80% or higher on the official combination vehicles knowledge test to pass. To ensure you’re qualified to operate vehicles with air brakes, you’ll also need to pass the official air brakes knowledge exam. This step is crucial for expanding your career opportunities, as most trucks in Iowa have air braking systems.
Our Iowa CDL Class A Practice Test is an intuitive tool designed to make you a better driver. With unlimited attempts and nonstop access, you can use it anytime, anywhere in the world. All 93 questions have multiple answer choices, but only one is correct. You can search for the correct answer in the official national CDL manual or ask our automated assistant for hints. Use this tool during your learning phase to master commercial driving theory efficiently and ace the official written knowledge test on your first attempt.
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Last verified for accuracy: November 2025 (reviewed weekly)
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