A 26-year-old man from Haywards Heath was killed after being hit by a train at Balcombe on Friday.
Flowers and tributes have been laid at Balcombe railway station for the man, who was struck just before 7.30pm.
Messages on the bunches of flowers laid on the northbound platform pay tribute to a man named as Lewis.
However British Transport Police have yet to release a formal identification.
Train services were severely affected by the incident, with buses operating between Three Bridges and Haywards Heath.
A spokesman for British Transport Police, said: “Our officers attended, alongside colleagues from Sussex Police and South East Coast Ambulance Service and discovered a 26-year-old local man, from Haywards Heath, had been struck and killed by a train.
“At this stage the incident is not being treated as suspicious and BTP officers will assist in the compilation of a report for the coroner.”