New Delhi, May 10 -- The group of factory workers fatally run over by a freight train on Friday had decided to sleep on the tracks since they thought there would be no trains running, the safety regulator of the railways said on Friday, calling for new protocols for engineers and field staff to report people walking on tracks so that other trains can be warned.

The victims were workers at a steel factory in Maharashtra's Jalna.

After covering 36km on Thursday, they slept on the railway tracks where they were run over in the early hours of Friday -- 16 of the 20 people in the group died on the spot, where images showed a trail of scattered luggage and food.

"Apparently, the affected persons had gathered along the track under the impressio...