CDL Passenger Practice Test
The P endorsement is required to drive a bus. The written test is about people — where they can stand, what they can bring aboard, and what you do when the bus breaks down with a load of passengers on it.
Written and reviewed by Christopher Scott Sneed, 30+ year diesel technician, founder of Blue Collar Empire.
What this section covers
- Standee line and passenger positioning
- Prohibited hazardous materials on a bus
- Railroad crossing stop, look, and listen procedure
- Pre-trip items specific to buses: emergency exits, seats, handrails, signaling devices
- Brake checks before entering traffic
- Disabled bus procedures and passenger safety at the roadside
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The standee line marks:
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3 practice questions with explanations
1. The standee line marks:
- A. Where standing passengers cannot pass — correct
- B. The rear exit
- C. Emergency lighting
- D. The driver's break zone
Why: No passenger may stand forward of the standee line.
2. At railroad crossings, buses must:
- A. Speed up to clear
- B. Stop between 15 and 50 ft, look and listen, then proceed if clear — correct
- C. Only slow down
- D. Never stop
Why: Buses must stop, open the door, look and listen at every crossing (with limited exceptions).
3. You should test the bus service brake:
- A. Only in the yard
- B. Just after starting, at low speed before entering traffic — correct
- C. Only at highway speed
- D. Once per week
Why: Check pedal feel and pull at low speed before you're committed to traffic.
How to study this section
- No passenger may stand forward of the standee line.
- Buses stop at railroad crossings, open the door, look, and listen — with limited posted exceptions.
- Test the service brake at low speed before you commit to traffic.
- Passenger safety questions almost always favor keeping people on the bus unless it is unsafe.
Frequently asked questions
- What is the standee line on a bus?
- A marked line behind the driver that standing passengers may not cross while the bus is moving.
- Do school bus drivers need more than the P endorsement?
- Yes. School bus operation typically requires the S endorsement in addition to P, plus a state background check.
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The CDL Training Center runs this chapter as a scored quiz and tracks what you keep missing. CDL prep is free. Pro ($14.99 a month or $99.99 a year) covers the diagnostics, handbooks and business tools.