Changes

- Quai André Citroën, under the ring road overpass. A lot of traffic on Fridays and Saturdays as many inhabitants of the 15th and 7th arrondissements go to Normandy for the weekend. As a result, this spot is very effective on these days (20 to 30 min on average) but much worse at other times (expect to wait one and half hours).  Porte d'Auteuil, at the last traffic light to the entrance of the A13, or even right under the "no pedestrians" sign on the shoulder to the motorway just after the light, where cars haven't picked up much speed yet and can see you well. Ask drivers to take you (at least) to Morainvilliers petrol station in Poissy. 

 Mantes- Poissy rest area (a.k.a. aire de Morainvilliers)La-Jolie toll: take Transilien J or RER A suburban train from Paris and get Saint-Lazare station. The fare is €8 but you may not be controlled. Get off at Poissy. Take bus 20 to bus stop "Auberge"in Mantes-La-Jolie (not Mantes Station). There's one bus every hour on weekdays, fewer than that on Saturdays and it doesn't run on Sundays. See a 30 minute walk to the timetable [httptoll gate://www.transdev-idf.com/horaire-ligne-20-poissy_aval_2_rives_de_seine_015 here]check the map.