Oh no, that depends on the bus. Long trips, the guards want comfort. Those buses usually have AC, maybe not pointed at the prisoners but at least the bus is cool in general. Short trips though, where the guards are up front and prisoners in the back and separate? Total crap shoot. I know this from some personal experience in the NYS system.
That paint job looks like some crap ‘limited edition’ skin in a chance-box mil-sim shooter. Bad enough to fall for that crap in a game, but in real life? Lame.