A vehicle 12 having an accident prevention system 10 that is useful for preventing an accident where a vehicle that is reversing at low speed collides with a person, is disclosed. The door module includes an indentation and may be made of a polymer or a fibrous material. A DC Bias circuit may be connected to the at least one resonator and may be capable of providing DC bias to the at least one tunable capacitor. A server blade mounted within the blade center may access a first storage subsystem through a switch module.