Back in our previous Championship days I'm sure I remember going past the Cherry Tree junction post match and somebody (Policeman?) would be controlling the lights to allow more vehicles through from Home Park direction.
I'm sure they also used manually controlled the lights at the Segrave Road/Outland Road junction. I seem to recall seeing a policeman at a control box somewhere adjacent to the bottom end of the car park.
I parked along Milehouse Road, got to the ferry in five minutes or so and arrived at my destination well in time. My principal concern was how busy the ferry would be with members of the SE Cornwall battalion of the Green Army - and it wasn't!