Transilien P works: dates, times and alternatives for August 2026 Last updated: August 3, 2026
In August 2026, traffic will be interrupted on certain sections of the Transilien P line. These disruptions have a direct impact on your travel: find the schedule and our advice in this article.
Key dates
Disruptions are scheduled on the Transilien 
line due to the replacement of old rails, to improve the line's reliability.
🚫 Disruption between La Ferté-Milon and Meaux
From July 13 to August 9, 2026, all day long.
Alternatives
A replacement bus serves the intermediate stations.
🚫 Disruption between Coulommiers and Tournan
From July 13 to August 23, 2026, on weekdays, all day long.
Alternatives
A replacement bus serves the intermediate stations.
Plan your journeys with the Bonjour RATP app
🔎 Find the best route
Start a route search: the results anticipate disruptions to help you avoid construction areas. Then customize according to your needs: schedules, transport modes, lines or stations to avoid…
🚦 Check live traffic updates
Access real-time traffic status via the app's Traffic tab. You can enable personalized alerts to be notified when your lines are affected.
📹 Demo: follow traffic updates with the app
The Bonjour RATP app, your ally for anticipating disruptions and
finding the best routes during construction work
