All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
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View All PlansThe Exam Simulator mimics the actual exam. It will stop once you reach the maximum number of allowed mistakes.
Taking your IA CDL Double/Triple Trailers endorsement can be stressful. Take some of the stress out of the equation by taking the Iowa CDL D/T Trailers practice test. This 20-question practice test closely resembles the authorized test so you can build up your confidence prior to the day of the test. Then, when you finally walk into the DMV, you’ll be ready to take your endorsement test with ease, knowing that you’re ready to get all of the answers right.
Getting to Know the Practice Test
If you’ve never taken a CDL practice test before, you might not be sure what’s coming. First, it’s important to know that the questions from the test are taken directly from the 2025 Iowa state CDL manual. That means that each question is specific to your state, just like the ones you’ll find on the official exam. When you take the actual test at the DMV, you’ll realize that the questions are very similar to the ones that were here on the practice test. They might be worded slightly differently, but they contain the same information. That is why this practice test is such a helpful tool.
Make Sure You’re Ready
When test day comes, some people head straight to the DMV. It’s a good idea to take your practice test once more to make sure you’re fully prepared. Those questions will refresh your memory. As you go through the questions, you might realize that you aren’t quite as sharp on a particular subject. Then, you need to take out your CDL manual and immerse yourself in that subject before you head out to take your test. Then, when you finally walk through those doors, you will be ready to handle anything that comes your way. No one will stop you from walking back out the doors with your CDL Double/Triple Trailers endorsement!
If you want to be successful the first time you take your IA CDL Double/Triple Trailers exam, a practice test is the key. With the aid of a practice test, you won’t have any trouble making it through the questions in the official test. Good luck with your endorsement!
Driver’s Ed is - nobody wants to set foot inside the DOT. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2025 IA Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DOT.
The Exam Simulator mimics the actual exam. It will stop once you reach the maximum number of allowed mistakes.
