TheoryFree CDL Passenger Bus Practice Test
Take a free CDL Passenger Bus practice test for 2026 with questions, answers, explanations, PDF download and timed mock exam links.
CDL Passenger Bus Questions
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Q1When inspecting a bus before a trip, which of the following must you check on every emergency exit door?
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✓ Correct answer: That it opens easily, closes securely, and is not obstructed
The FMCSA CDL manual requires that emergency exit doors open easily from both inside and outside, close and latch securely, and remain free of obstructions so they are usable in an emergency.
Q2During a pre-trip inspection, you discover that one passenger seat is loose and rocks noticeably when you push it. What should you do?
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✓ Correct answer: Report the defect and do not drive the bus until the seat is secured or removed from service
The CDL manual states that seats must be securely fastened to the bus; a loose seat is a defect that must be reported and corrected before the vehicle is placed in service.
Q3What is the purpose of the standee line marked on the floor of many transit buses?
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✓ Correct answer: It marks how far forward standing passengers may stand — they must stay behind it
Federal regulations require that standing passengers on a transit bus remain behind the standee line, which is located behind the driver's seat area to keep the driver's view and controls unobstructed.
Q4Which of the following is a signaling device you must verify is working during a bus pre-trip inspection?
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✓ Correct answer: Horn
The CDL manual lists the horn as a required signaling device that must be inspected and confirmed operational before every trip.
Q5During pre-trip inspection of a bus, you must check that handrails are:
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✓ Correct answer: Secure, free of sharp edges, and not missing from any step or aisle location where required
The CDL manual requires handrails to be secure and free of damage such as sharp edges or breaks, as they are essential passenger safety items that must be present and usable at required locations.
Q6Which of the following conditions found during a pre-trip inspection would make a bus UNSAFE to drive?
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✓ Correct answer: An emergency exit window is cracked and the emergency release handle is missing
A missing or inoperable emergency exit release mechanism is a critical safety defect; the CDL manual states that emergency exits must operate properly, and a bus with a non-functional emergency exit must not be driven until repaired.
Q7When inspecting stepwells on a bus before a trip, you should verify that they are:
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✓ Correct answer: Clear of debris, ice, or any obstruction, and that the step surfaces are in good condition
The CDL manual requires that stepwells be kept clear and in good condition so passengers can board and exit safely; slippery or obstructed steps create a fall hazard and constitute a reportable defect.
Q8Which of the following items is required emergency equipment that you must confirm is present and accessible on a bus before driving?
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✓ Correct answer: Fire extinguisher, first aid kit, and emergency reflectors or flares
The FMCSA CDL manual specifies that buses must carry a properly charged fire extinguisher, a first aid kit, and emergency warning devices (reflective triangles, flares, or fuses) that must be inspected and confirmed present before each trip.
Q9You are conducting a post-trip inspection after dropping off all passengers. Which bus-specific task must be included that is NOT required on a standard truck post-trip inspection?
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✓ Correct answer: Walking the entire interior to check that no passengers remain and no items were left that could create a hazard
The CDL manual requires bus drivers to walk through the interior after every trip to confirm no passengers — including sleeping children — are left on board and to identify any hazardous items left behind.
Q10A passenger attempts to board with a small oxygen concentrator needed for a medical condition. Under FMCSA rules, you should:
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✓ Correct answer: Allow it in the passenger compartment as a small-quantity medical oxygen device used by a passenger, which is among the narrow exceptions to the hazmat prohibition
The CDL manual notes that while hazardous materials are generally prohibited in the passenger compartment, small amounts of medical oxygen for personal use by a passenger are a recognized exception under the hazmat rules.
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