Idaho CDL Practice Test 2026 & Idaho ITD Rules
Prepare for your commercial driver's license with the official Idaho exam curriculum. TruckerPass combines the 985 federal FMCSA questions with Idaho-specific commercial vehicle limits, air brake testing, and the 2026 Modernized Pre-Trip inspection.
Idaho Long Combination Vehicles (LCVs) & Passes
- Idaho allows Long Combination Vehicles (triple trailers, turnpike doubles) on designated state routes under ITD special permit rules.
- Lookout Pass and Fourth of July Pass on I-90 enforce mandatory tire chain rules during snow and ice advisories.
- Idaho ITD Port of Entry stations require all commercial vehicles over 10,000 lbs to stop for weighing and safety inspections.
- Idaho ITD requires 80% on the 50-question CDL General Knowledge test.
Official Idaho Test Format
- Licensing Agency: Idaho Transportation Department (ITD)
- General Knowledge: 50 questions, 80% to pass (at least 40 correct).
- Air Brakes Endorsement: 25 questions, 80% to pass (required for air-equipped rigs).
- Combination Vehicles: 20 questions, 80% to pass (Class A tractor-trailers).
- Modernized Pre-Trip Inspection: 4-Zone component walkaround + 4-Step air brake test.
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