The stadium’s public address system must be capable of being heard clearly both inside and outside the stadium in all circumstances, taking particular account of excessive crowd noise.
Trained announcers who are capable of addressing visiting foreign spectators in their own language must be available when required. If possible, an announcer shall be used whose voice is familiar to visiting supporters from their own stadium at home.
Announcements over the public address system must be of a strictly neutral character. The public address system must not be used:
for the dissemination of political messages;
to support the home team;
for any form of discrimination against the visiting team.