A train crash occurred on 7 January 2023 at 09:16 CDT (UTC−5)[1] when a Mexico City Metro train going northward towards Indios Verdes metro station crashed into another one that was parked inside the Potrero–La Raza interstation tunnel of Line 3, which runs below Avenida de los Insurgentes.

[2] The Sistema de Transporte Colectivo (STC) operates the Mexico City Metro,[3] one of the busiest in the world, carrying around 4.5 million passengers a day.

[6] Prior to the crash, the system had shown signs of deterioration, with general concerns being expressed about its maintenance,[7][8] which increased after Line 12's overpass collapse in southern Mexico City, which resulted in the deaths of 26 people in 2021.

[12][13] After conducting an investigation into the 2021 collapse of the bridge in Line 12, DNV, the company hired by the city government, came to the conclusion that the overpass collapsed because it was built without quality and safety standards and that buckling of the girders would have been discovered if maintenance checks had been performed.

The report was labeled "biased" by Mexico City mayor Claudia Sheinbaum, who also questioned the firm's methodology for concluding that maintenance checks were not performed.