By road from Paris to LAL (print map)
If you leave Paris from "Porte d'Italie" or "Porte d'Orléans", take the A6 autoroute in the direction of Lyon ; on the autoroute, after 10 km, follow in the direction of "Bordeaux" ; after another 10km, take the Orsay exit and follow panels to reach Orsay and "Faculté d'Orsay". After this, look up in a local map to find LAL.
If you leave Paris from "Pont de Sèvres", take the N118 in the direction of "Bordeaux", after 30 km, exit at Orsay. Then, follow "Faculté d'Orsay" or find the RER-B train station "Orsay-Ville". After this, look up in a local map to find LAL.
In principle, going to Orsay from Paris in the morning is "against the flow" : "pros" do the trip in 30 mn ! (Speed is limited to 110 km/h on autoroute, 90 km/h on national roads, 50 km/h in town).
By road from Paris to Irfu (print map)
If you leave Paris from "Pont de Sèvres", take the N118 in the direction of "Bordeaux", after 30 km, exit at Saclay. From the cross road “Christ de Saclay”, follow the N306 road, direction is St-Aubin, Gif/Yvette, This N306 road is along the CEA center, after 300 m you will arrive to a first traffic circle cross road (which connects to the INSTN gate of CEA-Saclay) ; you go on straight away on the N305, and after driving 500m there is a second traffic circle cross road, you turn to the left (rotate by 270 degrees from your incoming direction ; in other words, you will exit on the road corresponding to the fourth exit of the traffic circle (first one goes to St-Aubin, second one to Gif-sur-Yvette, 3rd to SOLEIL facility ). The 4th one is the D128 road, go slowly, and just after 10m you will find the entrance gate of Orme des Merisiers.
