Several rule changes will be implemented by the FIA, in a bid to cut costs due to the global financial crisis and to improve the on-track spectacle. New rules governing tyres, aerodynamics and Kinetic Energy Recovery Systems (KERS), among others, are some of the biggest changes in the Formula One regulations for several decades. FIA initially declared a change in deciding the World Driver's Championship, with the driver winning the most races to be declared as the champion. However, this decision was later reversed following protests from Formula One Teams Association.