How to Know When a Vehicle is in Use

Have you ever been driving down the street and wondering whether the vehicle driving down the street in front of you was in use?

Does that sort of ambiguity make you angry and frustrated?

Well, be angry no more! A novel solution introduced by the operator of this bus in Chicagoland will do the trick.

Want to know how to let other drivers know that the vehicle you are driving is currently in use? May we suggest using a tiny sign in your vehicle’s back window?


  1. Perhaps a better sign would be “Taking Passengers.” I think that’s what– oh, right you know that. Just being facetious. Sarcastic even. This blog takes some getting used to.

  2. Maybe its a portable toilet that you can only use if your daring.. or if you wait at strategic stop signs

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