Endorsement S

CDL School Bus

16 practice questions cite 3 distinct 49 CFR sections. School bus endorsement applicants must also meet the passenger endorsement requirements under 49 CFR 383.123.

  • Source: PracticeDMV CDL question bank, citations checked against eCFR 2026-09-26
A truck tractor unit parked in a depot yard
From this area's questions

What this test covers, by regulation

Knowledge standard cited in this bank: 49 CFR 383.123.

49 CFR sections and parts cited by the School Bus question bank
SectionTopic in this bankQuestions in our bank
49 CFR 383.123School bus knowledge12
49 CFR 392.10Railroad grade crossing stops3
49 CFR 393.95Required safety equipment1

Source: PracticeDMV CDL question bank, citations checked against eCFR 2026-09-26. Subsections of the same numbered section are counted together.

Three questions worked through

These questions explain rules from the school bus bank.

What is the 'danger zone' of a school bus, as covered in the federal knowledge requirements for the school bus endorsement?

  1. The paved area used only for parking the bus at the school
  2. The interior aisle between the passenger seats
  3. The area surrounding the bus where a child is close enough to be struck but too near or too low for the driver to see directly (correct)
  4. The area behind the bus that becomes relevant only while backing up

The danger zone wraps around the front, sides, and rear of the bus and is the space where a child can be within striking distance without being visible to the driver from the seat. Federal knowledge requirements for the school bus endorsement specifically address this zone and the mirror systems used to check it.

Source: 49 CFR 383.123.

Why should a school bus driver walk the full length of the interior and check every seat after the last stop on a route?

  1. To collect any lost pencils for the school's lost and found
  2. To make sure no sleeping or hidden child has been left alone on the bus (correct)
  3. To count how many gum wrappers were left behind
  4. Because it is only needed on the first day of the school year

Unloading students is not finished until every one of them is off the bus, and a small child can fall asleep low in a seat where the interior mirror will not show them. A child left alone in a closed bus can suffer heatstroke within minutes in hot weather, so the walk to the back is the check that ends the route.

Source: 49 CFR 383.123.

The federal school bus endorsement knowledge standard requires a driver to know the safe operation of which equipment when loading and unloading students?

  1. The engine block heater and the fuel shutoff
  2. The destination sign and the fare box
  3. The stop signal device, the flashing warning lights, and the external mirror systems (correct)
  4. The two way radio alone

The federal knowledge standard for the school bus endorsement names the stop signal devices, the external mirror systems, the flashing lights, and the other warning and passenger safety devices a school bus carries. Those are what hold traffic and show the driver where children are while the bus is stopped.

Source: 49 CFR 383.123.

Endorsement S

Take the school bus test

16questions
13correct to pass

Answer, see the explanation and the source straight away, and keep moving. Missed questions save to your review deck automatically.