AT is completely shut tomorrow now.
What happened? I think I missed that one!
http://en.wikipedia.org/wiki/Big_One_(roller_coaster)#Incidents said:The first accident happened close to the opening of the ride, in July 1994. Twenty-six people were injured when the computer system failed to completely stop a train returning to the station. The result of this brake failure was a collision with a waiting train at the ride's station. The injuries were all only minor but the incident was widely publicised by the media.[2]
I'm very surprised that given one or more circumstances exist that the ride could manually be started. It seems a lot of responsibility to be placed on a ride attendant.
What rubbish are you spouting. Why is the big one unsafe? How does Arrow going bust impact safety?

I'm going with:

Googling things yourself is too hard, thanks.![]()

Horrible news that one of the teenagers has had their leg amputated. I got mocked for saying AT could be facing legal fees in the hundreds of thousands. Doesnt sound daft now does it?
The PLCs are extensively tested, hell we have PLCs from the 80s still running today.
Either a level 0 instrument failed and the program wasn't designed to deal with it I.e. the car going passed a faulty proxy when the programme asked.
Its either going to be a maintenance change issue or a freak situation that the original programmer didn't think off.
Most of these systems have pages of interlocks and self tests, wouldn't be surprised if a.key system was left in manual or engineering mode after the down period
Its not a told you so moment at all. Its horrific news and thats all there is to it but its also a trend on these forums to be mocked as an "expert" for having an opinion. There is no need to attack people or try to make them feel small for saying things how they see them and expressing an opinion.
Where did you hear about an amputation?
