Yeah, I can see it all now:
Overhead plumbing with an onboard water supply. A constant flow of water for the first couple of minutes. A smattering of writhing bedbugs on the street, in the bus's wake.
Obviously some stops would have a higher delousing yield than others.
Remember, public transportation. It's their duty to preserve your health and safety.
Ever work in a restaurant with a center tile drain or a few of them? At the end of the day you hose it all down and down the drain it goes
The one I worked in so long ago actually had a cement floor. No tiles. We just hosed the troubles, roaches, bedbugs, spilled food down the drain