Traffic information RER line A

Traffic is suspended between Nanterre - Préfecture and Achères-Ville • Poissy stations, and is heavily disrupted on the rest of the line due to a breakdown on the signalling system at Nanterre - Préf.

Service to resume at: 10:10 AM.

Please take alternative routes and contact RATP staff.

On weekends from now until 20 June, traffic will be suspended between Nanterre - Préfecture and Cergy - Le Haut • Poissy stations due to planned works.

Replacement bus service.

From now until 3 July, on Fridays from 10:00 PM. onwards, traffic will be suspended between Nanterre - Préfecture and Cergy - Le Haut • Poissy stations due to planned works.

Replacement buses.

From now until 18 June, on Mondays to Thursdays from 09:50 PM. onwards, traffic will be suspended between Cergy - Le Haut and Maisons-Laffitte stations due to planned works.

Replacement bus service at Sartrouville. Details on malignea.fr