Supplementary Regulations for the 24 Hour 2018
Available here from BARC
http://www.barc.net/championships/2cv#tab-downloads (http://www.barc.net/championships/2cv#tab-downloads)
Direct link
https://barc.blob.core.windows.net/barcnet/2018-24-hour-regulati-63kil.pdf (https://barc.blob.core.windows.net/barcnet/2018-24-hour-regulati-63kil.pdf)