TPMS: what are tyre pressure monitoring systems and how do they work?

Tyre pressure monitoring systems (TPMS) monitor the air pressure of a vehicle’s tyres and report this information in real time to the driver, for example using a ‘low pressure’ warning light to indicate under-inflated tyres (which can cause accidents).

TPMS are part of the ‘second wave’ of active safety measures – using cutting-edge technology such as on-board sensors, radar, cameras, GPS and lasers – that is being fitted to passenger cars.

Active safety technology can prevent accidents from happening altogether or at least actively help the driver to reduce the impact of an emergency situation. Active systems give the driver more control in dangerous situations. To that end, various safety systems constantly monitor the performance and surroundings of a vehicle.

Simply put, active safety systems avoid or mitigate an accident pre-impact – so before it happens or contact is made.