Automotive safety groups are claiming a victory after the US Court of Appeals overturned the tyre pressure monitoring system rule that the court said would work only half the time, the Detroit Free Press reported.

The paper popularly referred to as the ‘Freep’, said that Clarence Ditlow, the Centre for Auto Safety’s executive director, said the National Highway Traffic Safety Administration can no longer consider the indirect tyre pressure monitoring system – which uses the antilock braking system of a vehicle to measure the rotation of all four tyres – to detect low tyre pressure, and added that the system is inaccurate 50% of the time.

“The direct system would save consistently more lives each year,” Laura MacCleery, an attorney for the Washington-based consumer advocate group Public Citizen, told the newspaper which noted that the NHTSA issued the rule in June 2002 in the wake of investigations in 2000 into tread separations of Bridgestone’s Firestone-brand tyres on Ford Explorers.

Instead, Ditlow told the Detroit Free Press, NHTSA will likely have to use direct tyre pressure monitors, which observe the pressure of all four tyres and are considered more accurate.