Monday morning saw travel chaos engulf the region, with thousands of passengers stranded when train services were disrupted in Punjab, Haryana and Chandigarh.

BBC: Power cut causes major disruption in northern India

Tens of thousands of people were in the station waiting to board a train when railway officials announced a last-minute change in the platform, triggering the chaos.

NPR: 36 Dead In Stampede At Hindu Festival In India

Chaos ensued, not least because, in addition to the artificial disruption, there was a real one: a Tube train broke down on the Northern Line.

ECONOMIST: Transport for London gradually learns how to use data