This was reported by the Mirror;
The Mirror said:
During the brief hearing, HSE prosecutor Brendan Thorogood gave more information about its case against Merlin Attractions, saying staff had not been provided with proper procedure to avoid such an accident.
He told the court: “There wasn’t a system staff should should have had to follow.
“They overrode a computer controlled stop on the system and sent the train with some of those people here today around the ride.
“As a result those in the train came into collision with the stationary train.”
Bolded the interesting bit, of course there was a procedure, if that procedure was clear enough or followed correctly is the question.
Point being, system throws up block error and next train stops. What is the procedure? Clear error and send next train? No, most likely contact Manager or Engineer. Whats his procedure? Check block which has errored for reason? Likely, did they check? No. Ergo - procedure not followed.
I find it unlikely that Gerst didn't give full training to Ops/Managers/Engineers on what to do in this situation.