Abstract
It was presented that the effect of Photocatalysis coating of TiO2 to the body shell of Shinkansen vehicles in this issue. The results indicated that the coating performance was maintained only few months and the application of the present titanium oxide photocatalysis coating was difficult. The reason of loss of performance was contamination of metal powder into coating layer. It was necessary for application of photocatalysis coating to the Shinkansen vehicles that protection on surface from the wear powder of metals which were generated during a running of vehicles.
