Heh, I'm a judge....who'da thought most of my ideas would revolve around what I play eh? Seriously though *chuckles* I think the Cruisers and Explorers couls use loudspeakers on the outside, like police officers of the current times. Make it similar to the observation room's operation.
to radio Step out of the vehicle with your hands up!
From the cruiser a voice booms, "Step out of the vehicle with your hands up!"