Recent situation about the vehicular toilets

Abstract

Wouldn’t it be nice to use a restful restroom while traveling by vehicles? Years ago, people were happy to find the vehicle with a toilet. Since then, that had become common. Today, people expect to find scentless and cozy restrooms, moreover the restrooms is one of key equipment for setting itinerary. The toilets on vehicles are used in particular to many and unspecified passengers. It is also different from the residential one in view of sewer system. Let’s follow the footprint of this unique toilet improvement history of toilet & sewage treatment system for rolling stock and bus.