

Over half a century later, the next attempt was made in Princes Square, Wolverhampton. Traffic lights had been used for several years in the United States before making their debut here in 1927. This time, the experiment was a success and traffic lights would become a familiar feature on our roads. However, the striped posts of the modern Wolverhampton lights commemorates the significance of this spot.
Further reading: a contemporary description of the Westminster signals (PDF)