Basically, safety devices were over-ridden allowing two cars to be on the same section of track. One was stationery and the two collided.
The ride is to reopen next year.
The company says that procedures have been changed so that an incident of this type cannot happen again.
Let's hope that they have made it impossible for a single technician to defeat safety controls, rather than relying on improved training, especially when members of the public are actually on the ride.
If in extreme circumstances it is necessary to override safety mechanisms, a second senior person needs to be there to give authorisation and provide the second means of defeat.
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