Passenger Endorsement Test: What's on It & How to Study

What the Passenger knowledge test covers

The Passenger (P) knowledge test is based on the passenger-transport chapter of your state's CDL manual. Core topics include: safely loading and unloading passengers; locating and using emergency exits; how brake-door interlock systems work; federal hours-of-service rules; and defensive driving for a large passenger vehicle. Exact question counts and passing scores are set by each state, so treat your state DMV's CDL manual as the authoritative source.

Completing FMCSA-approved Passenger ELDT before you test is the most efficient way to prepare — the federal theory curriculum and the state knowledge test draw on the same body of passenger-safety material. For the requirements overview, see our Passenger (P) endorsement requirements guide.

Loading, unloading, and emergency exits

Expect questions on safe passenger handling: where passengers may stand or be seated, keeping the aisle and stepwell clear, not allowing passengers to operate equipment, and securing the vehicle before passengers board or exit. You should know how to brief passengers on emergency procedures and how to locate, open, and use every emergency exit on the bus.

Evacuation scenarios are common: when to evacuate versus keep passengers aboard, how to choose a safe stopping location, and how to manage an orderly exit. These are exactly the situations the Passenger ELDT theory walks you through before you sit for the state exam.

Brake-door interlocks, hours of service, and defensive driving

Many transit and school-type buses use a brake-door interlock that applies the brakes (or holds the throttle) whenever the rear door is open. The test checks that you understand what the interlock does, why it exists, and how it changes the way you operate the vehicle at stops. You should not rely on the interlock as a parking brake.

You'll also be tested on federal hours-of-service limits as they apply to passenger-carrying drivers, plus defensive-driving fundamentals: managing following distance, anticipating hazards, handling railroad crossings and pedestrians, and adjusting for the size and stopping distance of a loaded bus. Our Which CDL Endorsement Should I Get? guide explains how P fits with the other endorsements.

How to study and pass

Start with your state DMV's CDL manual and read the passenger section closely — it is the source the test questions are written from. Then complete FMCSA-approved Passenger ELDT, which is required to get the endorsement and reinforces the same theory. DLA Academy's course is online, self-paced, finishes in under 2 hours, and costs $20.

If you also plan to drive a school bus, study both endorsements together — the Passenger + School Bus ELDT bundle covers the theory for both, and the 3-endorsement bundle adds Hazmat. Most states also require an in-vehicle skills test in a passenger bus after you pass the written exam.

Start here ($20 each)

Pillar guides

Other answer guides

By state