Members of the public should avoid contact with designated transport for Olympic-related personnel if the two parties are involved in a traffic accident, the Beijing Traffic Management Bureau said on Sunday.

The bureau said in a notice all personnel involved in the Beijing Winter Olympics are managed in the closed-loop system and their designated vehicles will be labeled with a special red sign. In the event of an accident with one of these vehicles, citizens should keep their distance and avoid contact with the vehicle or its occupants and instead wait for professionals to arrive.

Beijing Winter Olympics organizers have begun a closed-loop operation on Tuesday, strictly limiting Games-related personnel to a few fixed venues with no access to the outside world in order to prevent the spread of COVID-19.

Overseas participants will enter directly into the closed loop upon arrival.