You put on the uniform, and you become invisible until someone is upset with you for whatever reason like you've blocked traffic with your truck, or you're taking a break too close to their home, or you're drinking coffee in their diner, and they will come and scorn you, and tell you that they don't want you anywhere near them.
Ci si mette la divisa e si diventa invisibili a meno che non ci siano problemi, perché il camion sta bloccando il traffico, o si è fermato troppo vicino a qualche casa, o tu sei al bar a prenderti un caffè e la gente ti guarda con disprezzo, e non ti vuole intorno.