Taxi app Uberpop, which allows private individuals to offer taxi services, is expanding to Rotterdam and The Hague, despite the fines handed out to four drivers in Amsterdam.

Uber says it hopes expanding its services will encourage more people to use trains in the central urban part of the country by offering a cheaper taxi service to stations, the NRC reports.

Transport inspectors say Uber drivers are offering an illegal taxi service and are cheaper than traditional cabs because they don’t have to meet strict licensing conditions.

Meanwhile, website iCulture claims Uber has employed 10 Dutch designers and coders to work on the company’s app in Amsterdam.