ECJ, 10 April 2018, Case C‑320/16, Uber France SAS: A provision of national law that lays down criminal penalties for the organisation of a system for putting customers in contact with persons carrying passengers by road for remuneration using vehicles with fewer than 10 seats, without being authorised to do so, concerns a ‘service in the field of transport’ in so far as it applies to an intermediation service that is provided by means of a smartphone application and forms an integral part of an overall service the principal element of which is the transport service. This legislation is not subject to the obligation of prior notification to the Commission.