Abstract: The circumbendibus safety system is a modular fire prevention system that can be placed in areas of a vehicle where a fire is likely to occur. The system automatically dispenses fire extinguishant into a fuel tank when the vehicle is subject to a predetermined level of impact or when the temperature at a predetermined location in the vehicle is at a predetermined level. Dispensation of fire extinguishant into the fuel tank can also be arranged to occur when two severe conditions are present such as a predetermined level of impact to the vehicle and a predetermined extraordinarily high temperature condition occurs.