Asbestos Fears Spark Buenos Aires Subway Strike as London Braces for Tube Walkouts

A sudden strike paralysed the C line of Buenos Aires’s subway on Monday, leaving thousands of commuters stranded at the central terminals of Constitución and Retiro. The walkout, called late on Sunday by the metro workers’ union (AGTSyP), was triggered by the continued circulation of Nagoya 5000 trains containing asbestos components, which union chief Néstor Segovia alleges breaches a May 2024 agreement to remove them [A1][A3][A8]. With no prior notice, passengers arriving from suburban trains were caught off-guard, forming long queues for buses and other subway lines [A6][A7][A9]. The line, a critical artery linking two major railway hubs, normally carries tens of thousands daily; its sudden closure cascaded delays across the city’s transport network [A10].

Across the Atlantic, the Argentine action echoes broader safety concerns about asbestos in ageing rolling stock. In Switzerland, federal railways SBB recently disclosed that some 400 older vehicles still contain the substance, banned there since 1990 [A2]. Yet authorities insist passengers face no risk because the affected parts are sealed away, and a CHF 2.25 million remediation project is under way. The contrast illuminates how regulatory and union dynamics shape public response: while Swiss agencies stress containment, Argentine workers demand immediate withdrawal – a stance that brought Buenos Aires to a halt without warning.

Meanwhile, London commuters are bracing for their own waves of disruption. The RMT union has called back‑to‑back 24‑hour strikes on Tuesday and Thursday this week over working hours, with further action already scheduled for June 2026 [A4][A5]. Transport for London warns of severe gaps across the Tube network, with services on some lines suspended entirely. Although unrelated to asbestos, the London walkouts underscore a broader pattern of industrial action hitting urban transit systems as workers push back on post‑pandemic conditions.

For Buenos Aires, the strike’s end remains uncertain; the union vows to maintain the measure “until answers are obtained” [A10]. In London, eleventh‑hour negotiations could still avert the immediate stoppages, but the recurrence suggests that without durable settlements, surprise transit strikes will increasingly become a fixture of metropolitan life. As cities worldwide grapple with legacy fleets and strained labour relations, the travelling public is left to navigate the fallout.