Tyre Monitoring Proposals Made

The US National Highway Traffic Safety Administration has proposed new federal standards for the installation of tyre pressure monitoring systems in passenger cars, light trucks and SUVs. The first option requires that the driver be warned when the pressure in one or more tyres, up to a total of four, has fallen to 20% or more below the recommended cold inflation pressure, or a minimum pressure specified in the new standards. The second option is that the warning is given when the pressure in one or more tyres, up to a total of three, falls below 25% of the recommended cold inflation pressure, or a minimum pressure specified in the new standards.