A traffic officer raises one arm vertically. As a general rule, who must stop?

Question

DentroTest · Accepted Answer

All the users who approach the officer must stop, except drivers who cannot do so with sufficient safety. If the signal is given at an intersection, it does not require those who have already entered it to stop. The stop is made at the nearest line or, if there is none, before reaching the officer; at an intersection, before entering it.

A traffic officer raises one arm vertically. As a general rule, who must stop?

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