Fleet Operations & Vehicle Maintenance Flashcards

Which Federal Motor Vehicle Safety Standard covers school bus emergency exits and window retention and release?

Answer: FMVSS 217

FMVSS 217 sets the requirements for bus emergency exits and window retention and release.

Compartmentalization, the passive occupant protection built from strong, closely spaced, padded high-back seats, is required by which standard?

Answer: FMVSS 222

FMVSS 222 sets school bus passenger seating and occupant protection requirements, including compartmentalization.

A transit-style school bus with the engine at the front, rear, or middle and the entrance door ahead of the front wheels is classified as which type?

Answer: Type D

Type D buses are transit-style, with the entrance door ahead of the front axle.

What is the main purpose of diesel exhaust fluid (DEF) in a modern school bus?

Answer: To reduce NOx emissions through selective catalytic reduction

DEF is injected into the SCR system, where it converts nitrogen oxides into nitrogen and water.

Which federal standard governs the stop signal arm on school buses?

Answer: FMVSS 131

FMVSS 131 sets the performance requirements for the school bus stop signal arm.

In the eight-light warning system, what is the correct sequence as a bus approaches a stop to load students?

Answer: Amber lights first, then red lights when the door opens

Amber lights warn of an upcoming stop, and the system switches automatically to red when the entrance door opens.

How often does the National Congress on School Transportation typically meet to revise the National School Transportation Specifications and Procedures?

Answer: About every 5 years

The NCST meets about every five years to update the national specifications and procedures.