CDL Practice Test
CDL Category Practice Tests
- General Knowledge Test
- Combination Vehicles Test
- Passenger Vehicles Test
- Pre-Trip Inspections Test
- Double-Triple Trailers Test
- CDL School Bus Test
- CDL Air Brakes Test
- Hazardous Materials Test
- CDL Tanker Vehicles Test
CDL Practice Test
How To Get An iowa Commercial Drivers License
Individuals may apply for their CDL starting at age 18. To be eligible for interstate driving as well as HazMat and Doubles/Triples applicants must be 21 years of age or older. All individuals applying for an Iown CDL must present a Medical Examiner’s Certificate according to the United States Federal Regulations.
If any one of the descriptions below is true about an applicant, they will be disqualified from receiving their CDL.
- Driver posses more than one driver’s license.
- Driver was convicted of driving under the influence in the past 24 months.
- Driver has a suspended, denied, canceled, or revoked driver’s license.
H – Hazardous Materials
N – Tank Vehicle
T – Doubles/Triples
X – Hazmat and Tank Comb
P – Passenger Vehicle
S – School Bus
Drivers must take a knowledge test as well as a practical skills test to showcase their knowledge of commercial driving laws and their ability to operate a commercial vehicle.
Hit the Open Road
iowa CDL License Test Tips
Applicants must complete a general knowledge test to display their understanding of commercial driving laws. The general knowledge exam is comprised of 50 questions. Those seeking a Class A CDL will need to complete an additional 20 question test on combination vehicles. Applicants seeking additional endorsements will need to take an additional test on the endorsement topic. The Passenger, Tank, and Doubles/Triples Endorsements are 20 question tests. Removing the Air Brake Restriction, the Iowa Operator and School Bus Endorsements are 25 questions. The Hazmat Endorsement is a 30 question test. All applicants must pass the respective assessments with a score of 80 percent or better to receive their Iowa CDL permit.
A skills assessment is required of all applicants. This assessment is comprised of three parts, which are the pre-trip inspection, basic controls skills, and on-road driving. Individuals applying for their P and S endorsements will be required to take the skills test in the respective vehicle for their endorsement.
Information on the Iowa Department of Transportation
The Iowa Department of Transportation administers CDL requirements and testing in Iowa. To get more information contact them via:
Additional Iowa CDL Helpful Links
Please use the links below to access more valuable Iowa CDL testing resources and to learn more about practice driving tests for the state of Iowa.
- Iowa Commercial Driver License Manual
- Iowa CDL Practice Test App
- Iowa DOT Locations
- Iowa Truck Driving Schools
- Iowa Drivers License Practice Test
- Iowa Motorcycle Test