It is rather amazing that the human visual system is hyper-sensitive to motion and yet can still read text which is moving about randomly.
As urban areas become a forest of roadsigns, today’s invention makes use of our motion detectors to help drivers pay attention to high priority signs.
Roadsigns which were deemed particularly important would be mounted on stiff springs.
As traffic passed and breezes blew, these signs would oscillate enough to boost attendance to them but not so much as to impair recognition of their content.
It’s only a matter of time before the advertising industry takes advantage of this idea.