It's the regional métro network in the Paris (Ile de France) Region - Réseau Expresse Régionale. (I live near it) The lines don't have numbers, they have letters - RER Ligne A, Ligne B, Ligne C and so on. It's operated jointly by the RATP and the SNCF and covers a wide distance around Paris (la Grande Banlieue).
Le couloir is 'the corridor' in French.
on the
the foot
Le quai (masc.) is the quay, the wharf.
le coude (masc.) is the elbow in English.
Joinville-le-Pont - Paris RER - was created in 1859.
"Le pouce" in French translates to "the thumb" in English.
Le couloir is 'the corridor' in French.
'le serpent' is the French word for 'the snake'.
le penseur means the thinker in French.
le mois means 'the month' in French.
"Le mur" in French translates to "the wall" in English.
Le menton means 'the chin' in French.
le canard (masc.) is the duck in French.
The RER is a Paris suburban train service. It does not go to Le Havre. You can go from CdG to Gare du Nord on the RER, from Gare du Nord to Gare Saint-Lazare on the metro, and from Saint-Lazare to Le Havre by train. The SNCF website will help you with this.
"Le Nouvel An" in French is "the new year" in English.
le soir (masc.) means the evening in French.