The project for renovating the POLT line (Paris-Orléans-Limoges-Toulouse), worth €3.5 million (including €1.5 million allocated to Colas), was signed in late 2019. This renovation aims to upgrade the railway infrastructure of the POLT line, which is a major route connecting Paris to Toulouse, passing through Orléans and Limoges. The project involves modernizing tracks, enhancing signaling systems, and improving overall infrastructure to ensure better performance, safety, and service quality. Colas, as part of the project, is responsible for the construction and renovation works, contributing its expertise in public works and infrastructure development.