I found my selft into posible Security breach, if prisioners have to pass throught the road during the day. What I have done is I have 4 "Road Gates". Red ones are Exterior and Blue ones are the interior por prisioner corredor, so they pass throught with out incidents. All this prcedure I have to manually do it, Blocking Blue ones during some hours of the day so prisioners can pass free.
THE SUGGESTION: Make doors so they can have a condition like, "Only open when <X> door is closed". In this case:
- TOP Road Gate => A
MIDDLE TOP Road Gate => B
MIDDLE BOTTOM Road Gate => C
BOTTOM Road Gate => D
Door A only opens when B + C are closed.
Door B only opens when A + D are closed.
Door C only opens when A + D are closed.
Door D only opens when B + C are closed.