displays and information boards are a civic-courtesy with the aim to 1) inform the public about the type of experiment being conducted, 2) to create awareness of the project, or 3) generate support for your solution.
Striking the right balance between creating clarity or confusion is a thing. As a public service, signage needs to be clear and understandable.
Signage fun fact; here in Amsterdam, the city banned using QR stickers for municipal signage to prevent third-party putting up their code on top and stealing users personal information.