Short stop cases, seem like they are tougher and tougher to win.

Let's face it, "short stop" bus cases are not "God's Gift" to the plaintiff's bar. The bus companies will not settle them and more likely than not you can expect defendant to file a summary judgment motion. It is not even enough these days to beat the summary judgment motion; Defendants believe they can win at trial and ARE WINNING at trial.
So does that mean don't ever take these cases? Of course not! Just "screen them carefully" from the get go. Look for cases obviously with a fracture or surgery.Look for reported incidents with a witness and/or other injured people. But , most importantly look for an articulate plaintiff. Just like in sidewalk cases, the plaintiff's testimony is ever so important. On a heavy case an accident reconstruction expert should be used.
Moral of the story; Don't take these cases thinking you will get a quick fix and settle.You will not! If you take a case like this expect that you're in for a trial...Therefore, proceed accordingly.