Understanding Traffic Lights: A Guide to Identifying Vintage Models

Traffic lights have been an integral part of our daily lives for nearly a century, with their design evolving over time to become more efficient and convenient. The early days of traffic signal production saw various companies experimenting with different materials and designs, leading to a wide range of models that are now collectible and sought after by enthusiasts.

One of the earliest and most iconic traffic light designs is the DuraSig, which was produced in the 1930s and 1940s. Characterized by its aluminum construction and fragile tabs instead of screws, these signals were prone to damage and required frequent maintenance. The reflector and lens were also attached to the door, making it difficult to replace them.

In contrast, the AluSig, which was introduced later, featured a more durable polycarbonate material that has become a standard in modern traffic signal production. This innovation led to internal hinges, thumbscrews instead of latches, and other improvements that made signals easier to maintain and repair.

The 1970s saw a radical redesign of traffic lights, resulting in the 'Short Fin' configuration that is still widely used today. The Eagle Signal company, one of the oldest signal manufacturers, played a significant role in this design evolution, introducing its own brand of polycarbonate signals and eventually adopting the now-familiar fins.

Minnesota has been particularly fond of certain vintage traffic light models, with many still in operation and collectible by enthusiasts. For example, the 'Tall Fin' KB63s have become sought after for their distinctive brass ID tags and lack of logo on the back. These early signals were made from the 1930s to the mid-1950s and feature an art-deco like design with fins on the top and bottom plates.

Despite the widespread adoption of modern traffic signal designs, these vintage models remain a fascinating part of our history and cultural heritage. Whether you're a collector or simply someone who appreciates the evolution of technology, understanding traffic lights can be a fun and rewarding hobby. By recognizing the different models and design elements, enthusiasts can gain a deeper appreciation for the innovations that have shaped our daily lives.

In conclusion, this 'spotter's guide' aims to provide an overview of the various traffic light models that have been produced over the years, with a focus on those found in Minnesota. From the early DuraSigs to the modern Eagleluxes, each model has its own unique features and characteristics that set it apart from others. Whether you're a seasoned collector or just starting out, this guide is intended to help you identify and appreciate these vintage traffic lights.