Keystone State Traffic Signals
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The City of Philadelphia
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District 7
History
Humble Beginnings
The Golden Age of traffic signals
The Poles Inc era
Union/Carlin era
Valmont Era: Part 1
Valmont Era: Part 2
Contact
Classic Signals in Other Parts of the World
Hudson County New Jersey 4-ways
Baltimore, Maryland
Utica, NY 4-ways
Alabama 4-ways
Virginia’s Old and Odd Signals
Tennessee
California Guy Wire setups
Ohio Rare Signal Spottings
Canadian Signals
Historical Photos
Newspaper Plans
Signs and Other Street Furniture
Green Light Go Program
PennDOT traffic signal portal
New Traffic Signal Collector Forum
Historical Signal Photos
Garden State Signals
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