Commercial Driver's License Passenger (P) and School Bus (S) Endorsement Knowledge Tests — 49 CFR Part 383
Passenger vehicle inspection, emergencies, loading and unloading, school bus danger zones, railroad crossings and student management — practice for the CDL passenger and school bus knowledge tests, with 1,000 flashcards, 350 quiz questions and a 40-question mock.
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Everything included — in full detail
This is exactly what you unlock. No vague promises — real numbers, straight from the portal.
Your full practice pool — 350 questions total, written to mirror the real exam blueprint, with full answer explanations for every question.
Including Passenger Vehicle Inspection, Baggage and Loading, Passenger Emergencies, Exits and Disruptive Riders, Passenger Bus Operation, Crossings, Braking and Regulations, and more.
A complete, realistic exam-day simulation with the same question count and time limit as the real thing.
Covering every key term, concept, and framework you're expected to know.
Hand-picked walkthroughs and explainers organized by topic.
Visual breakdowns of the frameworks and models the exam tests you on.
The exact formulas and calculations you need, ready to review before test day.
A searchable glossary so unfamiliar terminology never slows you down.
See your accuracy by domain, spot weak areas early, and follow a built-in study schedule.
Study anywhere — your progress syncs on the device you are using and picks up where you left off.
No subscriptions, no renewals — buy once and keep studying until you pass.
See the CDL Passenger and School Bus Endorsement Tests portal
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Topics you'll drill
7 core topics pulled straight from the real question bank.
- Passenger Vehicle Inspection, Baggage and Loading
- Passenger Emergencies, Exits and Disruptive Riders
- Passenger Bus Operation, Crossings, Braking and Regulations
- School Bus Danger Zones, Mirrors, Loading and Unloading
- School Bus Emergency Exits and Evacuation
- School Bus Railroad-Highway Grade Crossings
- School Bus Student Management, ABS and Special Safety
CDL Passenger and School Bus Endorsement Tests exam requirements & cost
Straight from the certifying body — separate from what we charge for the study portal.
The CDL Passenger (P) and School Bus (S) endorsement knowledge tests are the written tests for the passenger and school bus endorsements on a commercial driver's license. The knowledge standards are set federally by the Federal Motor Carrier Safety Administration (49 CFR Part 383) and the tests are administered by each state driver licensing agency. The number of questions and any time limit are set by your state, and the passenger and school bus tests are separate tests; this portal's practice mock has 40 questions covering both. Federal rule 49 CFR 383.135 requires you to answer at least 80 percent of the questions correctly on a CDL knowledge test. Knowledge test and endorsement fees are set by each state. The content outline spreads questions across 7 areas; the largest are Passenger Bus Operation, Crossings, Braking and Regulations (25.0%); Passenger Emergencies, Exits and Disruptive Riders (16.67%); School Bus Danger Zones, Mirrors, Loading and Unloading (12.5%). You need a commercial driver's license or commercial learner's permit; state guides describe the school bus endorsement as added on top of the passenger endorsement, and state background-check and skills-test requirements apply; confirm the current steps with your state licensing agency. This portal prepares you for the knowledge tests; it does not replace your state CDL manual, the skills test or the state application.
CDL Passenger and School Bus Endorsement Tests exam blueprint
Real domain weighting from the certifying body's own published exam syllabus.
- Passenger Vehicle Inspection, Baggage and Loading8.33%
- Passenger Emergencies, Exits and Disruptive Riders16.67%
- Passenger Bus Operation, Crossings, Braking and Regulations25%
- School Bus Danger Zones, Mirrors, Loading and Unloading12.5%
- School Bus Emergency Exits and Evacuation12.5%
- School Bus Railroad-Highway Grade Crossings12.5%
- School Bus Student Management, ABS and Special Safety12.5%
Real pass rate, retake policy, scoring, and a study timeline for CDL Passenger and School Bus Endorsement Tests — free, no purchase required.
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