To ensure long-term viability, the organisation became a limited company in 1972, under the name Transitec-Biermann Traffic Engineers SA. The executive management team expanded as a result.

Transitec-Biermann’s first contract was to plan transport networks in the Bouches-du-Rhône (France), and soon afterwards, begun work on a traffic and regulation plan for Tunis (Tunisia), and the rehabilitation of the Mellassine district.

The range of company offerings increased and the team of engineers turned to other transport interventions, including development, signalling, public transport, and traffic planning.

In 19XX, when Philippe Blanc and Philippe Glayre replaced Jean-Louis Biermann on his retirement, the company changed its name once again and became Transitec Engineering Consultants.