Employees of Transkéo, the current operator of lines T12 and T13, are starting an indefinite strike on April 2, 2025 to protest the deterioration in their working conditions, the hiring freeze and the lack of pay rises. A severely disrupted service is forecast for this Wednesday.
On Wednesday April 2,the Transkéo CGT launched an indefinite strike on lines T12 (Massy - Évry-Courcouronnes) and T13 (Saint-Germain-en-Laye - Saint-Cyr-l'École), denouncing a wage freeze, worsening working conditions and a crying lack of staff. The union is demanding pay rises, massive recruitment and real improvements in work organization.
This mobilization comes as Transkéo, a subsidiary of Keolis (SNCF Group), prepares to hand over operation of the two lines to RATP Cap Île-de-France in 2026, after losing the tender. Since this announcement, the union has accused management of blocking all expenditure, including maintenance and human resources.
The consequences of this strike on traffic are immediate and significant:
Île-de-France Mobilités strongly recommends consulting the real-time timetables via theIDFM application or the transilien.com website before travelling.
Since the T12 entered service in December 2023, the line has been plagued by delays, train cancellations and technical problems. The punctuality rate remained below 80% for three consecutive months in 2024, triggering a compensation campaign for users. These poor results contributed to the ousting of Transkéo by Île-de-France Mobilités, in favor of RATP.
For the unions, this transition has precipitated a reduction in investment, perceived as a gradual abandonment of the lines by their current operator. According to them, management is content with the minimum while waiting for the handover.
The strike looks set to be well attended. According to the CGT, more than half of the 200-strong workforce will be mobilized. Although discussions have begun between management and the unions, no agreement has yet been reached. In the absence of concrete progress, disruptions could continue over the next few days, with a lasting impact on the quality of service for users of the two tram-train lines in the Paris region.
For residents of Essonne and Yvelines, this mobilization with no end in sight adds to a daily routine already constrained by the scarcity of direct transport. They are strongly advised to plan ahead, carpool or explore alternative routes via the RER or bus lines.
Recommended age
For all















