Williams FW31 S1 current version 1.3.6

The introduction of Kinetic Energy Recovery Systems (KERS) in 2009 is not an obligatory element of the regulations, but may provide an opportunity for teams to gain competitive advantage. The amount of energy that can be recovered and used may increase in future regulations, but the level set for the technologys introductory year, set against considerations of weight and reliability, make the initial advantages less than gains to be achieved through aerodynamics and mechanical dynamics.