During the post-trip inspection, the AAMVA CDL Manual says drivers should give special attention to a group of items that are unique to school buses. Which group is this?

AAMVA CDL Manual, Section 10.2.6 – Post-trip Inspection, p. 10-5

Mirror systems, flashing warning lamps, and stop signal arms are what keep students safe while loading, unloading, and crossing the road. A failure in any of them is a safety-critical problem that other drivers rely on to know when to stop, so it has to be caught before the bus runs its next route.