Created in 1923, the Société des Transports Départementaux de la Marne (STDM) has honed its expertise in all sectors of passenger transportation by road: urban and intercity transportation, school buses, regular routes within the administrative department, transportation of employees for large businesses, SNCF road substitutions.

Since 2014, STDM has had three sub-divisions operating urban transit networks in Laon, Sedan, and Boulogne-sur-Mer.

Champagne Mobilités is developing its primary business lines to better serve the Greater Reims Urban Community and the Grand Est region. 

Close to its customers, Champagne Mobilités supports the Greater Reims Urban Community's policy of providing multiple mobility options.  

The Orlyval service has undertaken extensive work on its rolling stock, infrastructure and stations to ensure the line’s continued operation while improving passenger comfort. 

A new and more spacious layout in shuttles, LED lighting, new visual identity and real-time passenger information at stations, on the website and aboard trains. 

The line is fully accessible to reduced-mobility passengers. 

In 2022: 96.9% customer satisfaction and an availability rate of 99.38%! 

In order to ensure the best possible travel conditions for all twelve municipalities in the Saint-Quentin-en-Yvelines conurbation outside of Paris and to promote local economic growth, SQYBUS – an RATP Dev subsidiary founded in 1975 – offers modern and comfortable transportation. Today, it operates the second-largest transportation system in the greater Paris region after the RATP.

The safety of COM'BUS passengers is the priority of this RATP Dev venture. To this end, concrete action is taken and ground teams are reinforced on the routes. Around twenty ticket checkers and station attendants work hard every day for the well-being of their customers, making sure they travel stress-free.