If you're studying for your commercial driver's license, the information can be overwhelming. Our updated CDL permit test app can help. The app includes 19 tutorial videos and 130 sample test questions. Check it out if you're applying for your first CDL or a new endorsement. | Iowa Department of Transportation

CDL Road Test Tips: Safe Driving, Mirror Checks & Low Clearance Rules The CDL road test is designed to mock a real driving experience, which means your examiner isn’t just looking for basic turns. They’re grading every move you make behind the wheel. Here’s what you’ll need to do correctly on the road test: 👉 Follow all traffic laws — full stops at stop signs and red lights, always obey speed limits. 👉 Stay aware at all times — check mirrors every 6–8 seconds and keep both hands on the wheel (