DMV Prep™ is the most comprehensive test prep platform available. Since 2009 we've helped more than 800,000 students pass the Iowa Commercial Driver License (CDL) written exam and others.

Study aids included:
- Iowa CDL license/permit practice test with 580+ questions
- Iowa CDL Manual
- Road signs included for FREE

Sections included:
- Air Brakes (54)
- Combination Vehicles (55)
- Doubles and Triples (25)
- Driving Safely (204)
- Hazardous Materials (100)
- School Bus (60)
- Tank Vehicles (22)
- Transporting Cargo (30)
- Transporting Passengers (34)

Cheat sheets included:
- Air Brakes
- Passenger
- Cargo
- School Bus

*Cheat sheets are printable, can copy to iBooks, or use our built-in reader.

Features:
- Preview answers to all practice questions
- Bookmark questions for later study
- Study mode has immediate answer checking and explanations (where available)
- Share questions on Facebook to get help from friends
- Questions are not repeated until a topic is complete
- Practice tests are saved automatically and can be restarted at any time

These practice questions were developed by an expert driver and based upon the work supported by the Federal Motor Carrier Safety Administration.

Practice questions are available in English only.