Mon RER A app
Real-time answers to your questions on riding the RER A !

Find at a glance:

  • The position and advancement of trains in circulation.
  • Display in 3D or line map mode – the choice is yours!
  • The estimated travel time and times of the next trains.
  • A list of your favourite routes, for easy access.
  • The RER A Twitter feed (no subscription necessary) to see the current traffic status.

The “My RER A” app is available for the RATP zone (the segments Saint-Germain-en-Laye / Marne-la-Vallée – Chessy, or Saint-Germain-en-Laye / Boissy-Saint-Léger).