Citation

Forssell U. Vis. Zero Int. 2010; 2010(Jan): 66-68.

Copyright

(Copyright © 2010, UKIP Media)

DOI

unavailable

PMID

unavailable

Abstract

Correct tire pressure for a vehicle is a vital safety factor, yet many drivers do not check or maintain their tire pressure. Tire pressure monitoring systems (TPMS) exist, but their use varies widely by region of the world. In the United States, the Transportation Recall Enhancement, Accountability and Documentation (TREAD) Act made the use of tire pressure monitoring systems mandatory in all new vehicles since being phased in during 2005. Now, all new vehicles sold in the U.S are equipped with some form of TPMS. Although most of the work in developing TPMS was conducted by European companies, the systems are not yet required and so market penetration remains low. As of 2012, this will change and European cars will also be required to have TPMS. There are two approaches to TPMS: direct and indirect. Direct systems rely on readings of air pressures from inside the tire. Changing tires requires a new set of sensors. Indirect systems are set by the driver and can adapt to different scenarios. Because they do not rely on electronic components, costs are lower. They also are easily integrated into electronic stability control systems and cannot be deactivated. Indirect systems are rapidly overtaking direct systems in popularity.