Longest metro line in France, Line 8, is one of the most "degraded" in the network. The new trains which will replace the "running out of steam" metros will not arrive, at best, until 2029.

Until then, various measures are being implemented, including the creation of a dog technical team. The first part of this plan already began last year with the launch of the renovation of the 59 trains currently in circulation on the 8. The Balard-Créteil line is not a priority in the delivery plan for these new metros which should begin next year on line 10.