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Traffic Signals and Operations
For civil engineers and urban planners, these resources provide information and technical tools for planning and maintenance of highway traffic signals and signs.
Signal Fan's Homepage
Great photos of both modern & historic traffic signals and signs.
Highway Signs
Highway route markers from the United States and worldwide.
Lights To Go
Traffic signal equipment for the hobbyist and collector.
Manual of Traffic Signs
Signs listed by type,alphabetical order, and includes sign images.
Manual on Uniform Traffic Control Devices (MUTCD)
The Traffic Engineer's "Bible". Includes a preview of the upcoming millennium issue of the MUTCD to be released in 2001.