Free Idaho CDL practice test with real commercial driving questions. Prepare for your Idaho CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The Idaho ITD CDL knowledge test has 50 questions for General Knowledge, with additional 20–30 question tests for each endorsement (Air Brakes, HazMat, Tanker, etc.). You need 80% to pass each section. Idaho allows learner's permits at age 14½ and tests applicants at Idaho Transportation Department offices.
The Idaho ITD knowledge exam tests your understanding of Idaho traffic laws, road signs, and safe driving practices. DriveAce covers every topic you'll encounter on test day.
Vehicle inspection, cargo management, driving techniques, and documentation for Idaho CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the Idaho ITD.
Hazardous materials classification, placarding, loading/unloading rules for Idaho CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for Idaho tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under Idaho CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for Idaho CDL.
The Idaho ITD CDL General Knowledge test has 50 questions. You need 80% (40 correct) to pass. Each CDL endorsement — Air Brakes, HazMat, Tanker, Doubles/Triples, Passenger, School Bus — has an additional 20–30 question test, each also requiring 80%.
DriveAce covers all major Idaho CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on Idaho ITD CDL requirements.
Yes — DriveAce offers free CDL practice questions for Idaho. Study General Knowledge and endorsement-specific questions that mirror the real Idaho ITD CDL exam. Full access to all practice questions is available for a one-time $19.99 fee.
You need to score 80% on the Idaho CDL General Knowledge test and each endorsement test. DriveAce practice tests use the same 80% passing threshold, so you always know when you're ready for the real exam at the Idaho ITD.
Join thousands of drivers who passed their Idaho CDL exam on the first try with DriveAce. No subscription. No ads. Just the knowledge you need.
Start Free Practice Test →$19.99 one-time for full access. 20 free questions included.