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Die Ampel wird 100 Jahre alt
Over 100 years ago, on August 5, 1914, the first electric traffic light was installed on a city street in Cleveland, Ohio, marking a milestone in traffic management. Berlin’s Potsdamer Platz (photo), at that time the busiest intersection in Europe, installed the famous five-sided traffic light tower made by Siemens in 1924. Today the red-yellow-green signals are an integral part of city landscapes worldwide. On the outside, traffic lights haven’t changed much over the last decades. But inside a traffic light, groundbreaking changes have taken place. Traffic lights have become more intelligent over the years: modern traffic management takes into account the current traffic situation and optimizes traffic flow, for example, by allowing "green waves" or by prioritizing emergency vehicles, buses, and trams.
Wilke Reints

Wilke Reints

Wilke Reints

Head of Development of Intelligent Traffic Systems of Business Unit Road and City Mobility, Siemens AG, Sektor Infrastructure & Cities


Stefan Wagner

+49 (89) 636-21561