Patent ID: 7439695

Claim:
A braking system for use on a vehicle having an electric propulsion system, the electric propulsion system being operable to generate an alarm signal if the electric propulsion system is not able to control the vehicle at a desired speed, said braking system comprising: a first braking circuit operable to control an amount of braking that is to be applied to a first rear wheel of the vehicle by generating a first braking signal; a second braking circuit operable to control an amount of braking that is to be applied to a second rear wheel of the vehicle by generating a second braking signal; a third braking circuit operable to control an amount of braking that is to be applied to a first front wheel of the vehicle by generating a third braking signal; and a fourth braking circuit operable to control an amount of braking that is to be applied to a second front wheel of the vehicle by generating a fourth braking signal; wherein a value of the first braking signal for the first rear wheel, a value of the second braking signal for the second rear wheel, a value of the third braking signal for the first front wheel, and a value of the fourth braking signal for the second front wheel are automatically controlled based on the alarm signal output by the electric propulsion system, wherein the third braking signal generated by said third braking circuit and the fourth braking signal generated by said fourth braking circuit are controlled so as to always be smaller than or equal to the first braking signal generated by said first braking circuit and the second braking signal generated by said second braking circuit.