Upkeeping and maintaining infrastructuresN° 129-130, 2022/3 - 120 pages Upkeeping and maintaining infrastructures Maintenance, regulation and public. A socio-historical approach for infrastructuring the tramway Everyday railway passenger flow regulation: the infrastructure under constant strain Negotiations, mobilisations and everyday reproduction of electricity infrastructures in Ibadan (Nigeria) Reliability and accountability of off-grid solar electricity in Senegal “The road made by its maintenance” Analysis of the road science in France during the XIXth century Maintain or regenerate? How operators approach the “catching up” of rail infrastructure in the Île de France region Interview with Jacques Rapoport La gratuité des transports. Une idée payante ?, Observatoire des villes du transport gratuit, Vanessa Delevoye, Sophie Hasiak, Maxime Huré, Claire-Marine Javary, Arnaud Passalacqua, Philippe Poinsot and Julie Vaslin, Lormont, Le Bord de l’eau, “Documents”, 2022, 127 pp. Vers une vie sans voiture ; Habitudes en mouvement, Alexandre Rigal, Métis Presses, 2020, 176 pp. Quo vadis rider. La lotta umana e sindacale dei ciclofattorini, Maria Matilde Bidetti, Carlo De Marchis Gómez and Sergio Vacirca (eds.), Rome, Futura, 2022, 233 pp.