I worked in a yard for a short time and have spent a LOT of time in them. The only really safe way to handle a straddle carrier is with 3 people - one driving and two spotting.
I've seen people running them alone and it's just ASKING for trouble. If they didn't have side guides at least as high as the sidewall of the tires they were just waiting for this one - especially if they have a cowboy driver.
Those things are dangerous heavy equipment - nothing to get casual with. It's very lucky no-one was killed.
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I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.