OICA presentation on a field study undertaken to collect data on tyre pressures of vehicles in use towards assessing the effectiveness of direct and indirect tyre-pressure monitoring systems on the maintenance of correct inflation levels.

European Commission note on the publication of a recent study carried out by the environmental advocacy group Transport & Environment on the performance of indirect TPMS.

OICA presentation on its field study to develop data on TPMS performance and comments on the T&E test procedure for evaluating indirect TPMS. In particular, OICA states that the T&E methods did not represent normal use cases or correspond to the intent of UN R141 to address slow diffusion of air that leads to underinflation.