Looks like a regular charter bus here, too. I'm not sure if there's a regulation about the hammers here. Could be. And maybe none of them ever noticed them or knew what they were. Pretty conspicuous: bright red, hammer-shaped, molded grip with a handguard, ground steel point; I just took it for granted people knew what they were. I think there's usually a decal in the corner with a pictogram showing where you should hit it. It's been a while since I was on a bus

Edit: correcting the autocorrect