During a school bus emergency evacuation, how far off the road must a "safe place" be, and in what direction, to protect students from debris if another vehicle collides with the bus?

AAMVA CDL Manual, Section 10.3.2 (Evacuation Procedures), p. 10-6

A driver who misjudges evacuation distance can lead students into the exact debris field they're trying to escape. The 100-foot, oncoming-traffic-side rule is specific precisely because passing vehicles — not the bus itself — are often the greater danger during a roadside evacuation.