Train toilet of Marian Loth in the new intercity train

News - 11 October 2017

On Tuesday 3 October, the NS (Dutch Railways) unveiled its planned new-generation intercity (ICNG) train. The basic design of the train toilet was developed by PhD candidate Marian Loth from the faculty of IDE (TU Delft) and is the new standard for NS intercity trains.

Over the past few years, Marian Loth has worked closely with the NS to see how ergonomic design can be used to make train toilets more hygienic. 

Passengers think train toilets are dirty and that is why they give them a score of just 4.7. This can discourage elderly people and families with small children from travelling by train. To turn this situation around, the inclusive design included extra grab rails, step-ups for toddlers and a changing table for babies. Only the toddler step-ups have not been included in the standard NS toilet.

The train toilet cubicle now also features a urinal to allow for the different ways passengers use the toilet: sitting, squatting and standing. As these very different positions require different hygiene measures, the train toilet now has a separate urinal. This means that the toilet seat stays cleaner for people who use the toilet sitting down, for the most part women. As a final touch, the walls are decorated with images from nature to give toilet users a feeling of calm.

The NS has decided to introduce Marian Loth's basic design in the modernised Virm intercity trains. The basic design is now standard for NS intercity trains, meaning the new generation of trains will be fitted with the hygienic TU Delft-designed toilet, with the ultimate aim of raising the customer satisfaction score to satisfactory.

In 2018, Marian will defend her thesis on this subject.

Besides Marian Loth, the train toilet team exists of Prof. Daan van Eijk (promotor) en associate professor Johan Molenbroek (co-promotor).

Recently, on the website of, an article was published about the new train concept. Click here to read the article (in Dutch).