This decade saw a change in the global transport planning mindset – where congestion and traffic reduction became a key concern. The decade also signalled the true beginning of work in France for TRANSITEC, when the offices moved from Marseille to Lyon-Meyzieu in 1980, and saw increasingly close collaboration with a number of municipalities in French-speaking Switzerland.

The 1980s was a decade of large projects for TRANSITEC, including DESIGNING?PLANNING? studying options for the Geneva bay crossing, designing access to and within the Paris-Bercy Stadium, planning the Lausanne metro, and helping with the design and implementation of the Tunis metro.