Probably a driver spotted a trespasser while passing by and so the control centre has asked following trains to slow down. Trains appear to be moving well so likely no one else has seen the trespasser.

Train corridor is between the fences each side with now barricade in between

I was on a westbound train at Summer Hill and the guard just announced they will be proceeding cautiously towards Strathfield “due to someone in the train corridor”.

Not sure exactly what this means but I hope nothing bad, and peak hour trains aren’t affected.

Reports of “train corridor” incursion at Strathfield