The pedestrian signals were in beta, the jury was instructed correctly, the infringement was sufficiently willful, but remand for damage in light of the beta trials issue.
Reminder: Of the many things that we strikingly don't know, Patent is among the most striking.
http://www.cafc.uscourts.gov/sites/default/files/opinions-orders/17-1974.Opinion.7-10-2018.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.