Why should a driver confirm the stop arm has fully extended before opening the door to load or unload students?

Pick an answer

1. Stop arms are purely decorative with no functional warning purpose
2. This check is required only on stop arms installed within the last year
3. The stop arm's extension has no bearing on whether traffic notices the stopped bus, since the red lights do the whole job
4. A malfunctioning or partially extended stop arm may not adequately warn approaching traffic

Correct!

Not quite. The correct answer is highlighted.