Operational Circular No. 2 (Rev. 3): Conditions of access to the fenced parts of the CERN site
(update of the implementation measures)
Written by:
HR Department
—
Members of the personnel and other persons concerned are hereby informed that the Director-General has approved, further to consultation with the Staff Association, an update of the document “Implementation measures, subsidiary document to Operational Circular No. 2 (Rev. 3)”.
The revision clarifies that parking facilities are primarily intended for persons accessing the site in the framework of official CERN activities.
It also introduces limitations on parking duration. For persons accessing the site in the framework of official CERN activities, the maximum authorised parking duration is five consecutive working days. In the case of duty travel, a longer period may be agreed with the Registration and Access Control Service in designated long-stay parking areas.
For persons accessing the site outside the framework of official CERN activities, the maximum parking duration is three hours.
The updated document entered into force on 1 August 2026 and is available at the following link.