in numerical simulation
Get to Saclay by public transport or the CEA-Saclay buses
CEA-Saclay Campus is easily accessible by public transportation. You can either:
- Take RER B or C and get off at Massy. Take the “TransEssonne” bus number 91-06 heading to Saint-Quentin-en-Yvelines. Get off at “CEA Porte 306” if you are going to INSTN, or if you already have an ID card. Do not forget that you won’t be able to access the campus for the first time from this entrance. The full timetable is available at: https://www.vianavigo.com/fiches-horaires/bus/ (Nom de l’arrêt: Gare de Massy Palaiseau, Massy then scroll down to Ligne EXPRESS 91-06).- Take RER B and get off at le Guichet Statio. Take CEA shuttle to Saclay. The timetable is available on the Excel table aforementioned, tab “NAV RER”.
- To go to DSV/I²BM/SHFJ in Orsay, take RER B and get off at Orsay. It is then a 5-minute walk from the train station to your work place.
CEA-Saclay set up an extensive bus network to help you access the campus without using your car or public transportation. All buses arrive in CEA at 8:30 am and leave at 5:00 pm.
If you want to know if a CEA bus stops nearby your place, please refer to the Plan des transports tab on
The first tab indicates all 442 stops made by the CEA bus and the precise hours of departure in the morning. The next tabs indicate the schedule and route line by line (morning and evening). For the special 6:15am service, see tab “18:15” (3 buses. For the CEA shuttle between Le Guichet RER B stop and CEA Saclay, see tab “NAV RER”.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.