Выражение встречается в следующем контексте:

14.2.2 Special Stage recommendations
14.2.2.1 The design of each event should take into account spectator
considerations unique to the country in which the event is being
conducted.

14.2.2.2 Special stages must be situated and scheduled to discourage
movement of spectators between them.
14.2.2.3 Reconnaissance of crews is considered a safety factor.

Заранее спасибо