For the Fête de la Musique, several metro lines, RER, trains, and trams in Île-de-France will remain open overnight on June 21-22. Six metro lines (1, 2, 4, 6, 9, and 14) will operate throughout the night, though not all stations on these lines will be open. A special fare of 4.30 euros will be available for occasional users.
Bias read (Center): The article provides factual information about transportation services during the Fête de la Musique without taking a stance or showing bias. It reports on the event neutrally, focusing on logistical details such as which lines will remain open and the cost of the special ticket.
Why these scores (Factual 85 · Objective 95): The article provides specific details about which metro lines and stations will remain open during the Fête de la musique, aligning with the cross-source consensus. It mentions the special fare and quotes IDFM, making it largely factual. The tone is neutral and informative.




