On the top deck of an open roof tour bus

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Generally the hatch is near the engine so the front (assuming it's a modern bus with the engine at the back with an override handle for the hydrolic door at the front of the bus)...
Hahaha smartass

I was thinking of yellow school buses with the engine in the front, a small front door, windows that are akin to prison windows, and an escape hatch in the back that requires a Hercules 3rd grader to open, but good comeback with the engine being in the rear LMFAO. I guess it's been a while since I've had to ride on a bus lol.