Three bus lines arrive at Orme des Merisiers, which is the closest bus stop to the lab:

• Line 9, which comes from the RER station Le Guichet: https://www.transdev-idf.com/ligne-9/les-ulis-saclay/006-006
• Line 91.06 which comes from the RER station Massy-Palaiseau: http://www.albatrans.net/
• Line 91.10 which comes from Orly airport, through the RER station Massy-Palaiseau: http://www.albatrans.net/

The region Ile de France has a journey planner: https://www.vianavigo.com/

The CEA has two types of company buses:

• CEA buses that go from the main CEA centre (a shuttle is available between the lab and there) to many places, including inside and outside Paris, but only twice a day: once in the morning and once in the evening.
• Navette mutualisée (shuttle shared with other companies) which only go to Porte d'Orléans, but run at a few different times every morning and every evening.

Information for both the types of buses is available at: http://www-saclay.cea.fr/Phocea/Page/index.php?id=502

To receive an SMS if buses are cancelled or running late, go to www.cea-infobus.fr and create a personal account. There is also an app that lets one follow the position of the buses.

RER line B: (service status page: http://www.transilien.com/web/site/accueil/etat-trafic/trafic-jour) Cost: Navigo Monthly Pass, no zones anymore (about 70 euros monthly or 770 annually (1 month is free), and there is a partial CEA refund, see below) RER live train times from Le Guichet (http://www.ratp.fr/horaires/fr/ratp/rer/prochains_passages/RB/Le+Guichet/A), Massy Palaiseau (http://www.ratp.fr/horaires/fr/ratp/rer/prochains_passages/RB/Massy+Palaiseau/A) Île-de-France public transport planner: ViaNavigo (http://www.vianavigo.com/#) (type in ‘Orme des Merisiers, Saint-Aubin’ for journeys starting from the bus stop outside LSCE). It’s possible to take public buses to Le Guichet (the bus number 9) until 20h31(check the accurate times on the ViaNavigo link, above), and Massy-Paliseau RER (bus number 91-06) up until 21h26 Map of local bike routes (blue) and hiking trails (brown): http://www.opencyclemap.org/?zoom=15&lat=48.70774&lon=2.14683&layers=B00 Ile-de-France cycle route map (jpg): http://www.iau-idf.fr/fileadmin/user_upload/SIG/cartes_telecharge/cyclo/Pistes_cyclables_2010_recto.jpg Two CEA bikes for communal use at the bike stand in the main car park - keys can be obtained from main mail-sorting room in Building 701. Night buses from Paris to Gif, Orsay and other places: http://www.noctilien.fr/Noctilien/Recherche.do Steep uphill walk from Gif-Sur-Yvette RER station to Orme (allow lots of time as there are no signposts): http://www.lsce.ipsl.fr/Images/Page/1/Gif-Orme.jpg Saclay plateau car-sharing app for smartphones: pilot scheme to find a ride share from your home to work: http://www.smartautostop.com/inscription/paris-saclay/

B. Refund claim form for Navigo pass

CEA will process reclaims (50% of price corresponding to the pass - note there are no ‘zones’ on the Navigo pass anymore) for weekly, monthly or annual Navigo transport passes (but not individual tickets). It’s the law in France that they do this, as part of their employee transport scheme, that is funded by the payslip deductions from everyone (including car commuters). The claim form can be downloaded here: https://intranet.lsce.ipsl.fr/Phocea/Page/index.php?id=27 (under the section called ‘Remboursement d'abonnement aux transports publics’), as well as the name of the current person to send the form and receipts to. You need to do this either at the end of each calendar month, or directly after the purchase of an annual pass. If you lose the receipt for a Navigo recharge, go to an RATP office (there’s one by the main entrance to Denfert-Rochereau, for example) and they can give you a statement with an official stamp. Here’s a list of interesting places to visit in the Ile-de-France region: Free trains in Paris: http://freetrainsparis.com/destinations/