A Tire Pressure Monitoring System (TPMS) is an electronic system designed to monitor the air pressure inside the pneumatic tires on various types of vehicles. This system will report real-time tire-pressure information to the driver of the vehicle, either through a gauge, pictogram display, or low-pressure warning light.
The goal of TPMS is to help avoid traffic accidents, poor fuel economy, and increased tire wear due to under-inflated tires. Due to the influence tire pressure has on vehicle safety and efficiency, the United States government passed the Transportation Recall Enhancement, Accountability, and Documentation (TREAD) Act. Now, most vehicles sold in the United States since 2007 include a tire pressure monitoring system.