TPMS stands for Tire Pressure Monitoring System. It is a system that monitors the air pressure inside the pneumatic tires on vehicles and reports real-time tire-pressure information to the driver using either a gauge, a pictogram display, or a simple low-pressure warning light. TPMS can be divided into two different types: direct (dTPMS) and indirect (iTPMS) . Direct sensors are located inside the tire and take active pressure readings, while indirect sensors are a calculation based on wheel speed sensor data. The goal of a TPMS is to avoid traffic accidents, poor fuel economy, and increased tire wear due to under-inflated tires through early recognition of a hazardous state of the tires. TPMS are installed either when the vehicle is made or after the vehicle is put to use. The TPMS low tire pressure indicator is a yellow symbol that illuminates on the dashboard instrument panel in the shape of a tire cross-section with an exclamation point. If the light is illuminated, it means the tires could be underinflated, which can lead to undue tire wear and possible tire failure.