Accident investigation this morning, a nasty head/side collision at a junction between trains traveling in opposite directions, many casualties, investigators at the scene
Preliminary accident report :-
4.10.41 P5/6 junction collision, fixed
Cwise train waiting in S1, acwise approaching from S6 having left plat3 in auto but switch now manual. Acwise train routed to S2 and entered it as far as S2main when S1 train started and hit other train at junction. S1 train cannot leave without both S5 & S6 locks.
Problem is if plat3 manual set whilst in exit state (after routed) S6lock is forced off, this should not happen, S6block will release the lock when appropriate anyway as it will also do for arrivals. I cannot see any reasonable reason for this line of code, it should just be commented out in all terminus platforms (3).
I can only hope the people who write real signalling software have better test facilities than me before they unleash it on the real railway
