High Quality Content by WIKIPEDIA articles! In rail transport, many passenger trains (usually medium and long-distance) have toilet facilities on board. These are often located at the ends of carriages. Toilets suitable for wheelchair users are larger, and hence trains with such facilities may not have toilets in each carriage.The traditional method of disposing human waste from trains is merely to deposit the waste onto the tracks using what is known as a Hopper Toilet. This ranges from the toilets being a hole in the floor of the train, to a full flush system (possibly with sterilization). The 'hole in the floor' (also known as a Drop Chute Toilet) system where waste is deposited on the track is still in use in many parts of the world, particularly aboard older rolling stock. The principal drawback is that it can be considered crude or unhygienic – it litters railway lines and can produce health risks if the train is passing over a public waterway.

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