Tire Pressure Monitoring System (TPMS) Safety electronics in automobiles continue to be designed and enhanced to add for passenger safety. The Tire Pressure Monitoring System (TPMS) is a safety feature that updates drivers on their tire pressure level from within the comfort of the car cabin. Studies have shown that it is very common to have running tires with low air pressure, hence tire pressure monitoring is an important safety factor throughout the automotive industry. The US government has passed a legislation that requires all passenger cars and small trucks with gross vehicle weight of less than 10,000 pounds to be equipped with TPMS. The main purpose of the TPMS is to warn drivers of the loss of pressure in their tires for greater safety and automobile handling performance.