Lots of questions, and that makes me really curious what the reality is here since obviously that's the way things are and as a multi-million dollar park operator I'd have to assume they didn't just go on a wing and a prayer then rolled over when it didn't pan out.
Not replying further after this about Ka but... yeah. Somewhat along these lines. The permits and everything were put in place and GAdv was operating off of precedence from Lex Luthor that it would be fine to operate alongside Ka. When the state inspectors were brought in in May for certification they dropped two notable things that needed to be done in order for Zumanjaro and Ka to pass certification for the year.
1) The operating system of Kingda Ka needed to be linked to Zumanjaro's so that when Zumanjaro is in the middle of a cycle in any capacity Ka cannot be launched.
2) A protective roof needed to be put in place over Zumanjaro's station that would prevent loose articles from Ka falling into the station while the cars were in home position.
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For Jersey Devil, the station layouts I have had described to me have all been pretty pointed towards a continuously moving station instead of a traditional station like what Railblazer has:
Jersey Devil will have a split in the line for Single Riders, and parties of different sizes (2-3, 4-6, 7+) alongside Flash Pass's line merge. A similar station design to Golden Lasso Coaster:
Where riders get on and off one at a time while the train is moving. The only time a train would stop with this system would be if there was someone with mobility issues trying to get on the ride like a wheelchair transfer.