Currently the Race Direction is the only body competent to change the length of a race. This competence has been extended to authorise Race Direction to be able to change the length of a race outside of the minimum and maximum lengths defined elsewhere in the regulations.
There have been recent situations in which teams and riders have ignored the recommendations of the official tyre suppliers on issues such as tyre pressures. It is suspected that this has led to cases of abnormal degradation of tyres affecting the safety of the riders.
A new regulation has been approved which will compel teams and riders to use the tyres according to the parameters agreed by the Technical Director and the organisers in consultation with the official tyre suppliers.
The full text of the regulations may be viewed here