Welcome to my blog. I will be discussing how traffic signals work, why they do what they do, and why you may be getting more reds than greens.
This blog will also provide information about how I am implementing NTCIP signals, using the new and fancy operations to improve traffic flow. The general concepts are shown here, but much of the details are left to the imagination of the reader... No sense in giving all of the secrets away. Feel free to ask questions... Most of what I am describing here is no secret. I have presented most of these topics at ITE and IMSA regional and national meetings over the last few years.
Traffic signals can be very complicated devices. Traffic signals may be pre timed, semi actuated, fully actuated, coordinated, uncoordinated or running with an adaptive algorithm. The vehicles can be undetected, Or detected by a variety of methods. Vehicle detection can be accomplished via pressure plates (very rare now), or detected by a variety of inductive loop wires, video detection and radar detection.
There are a variety of brands, makes, models, software versions and standards. I have extensive experience with Naztec Apogee, Econolite ASC/3, ASC/2 and 2/S and 8000, Traconex J-9, CJ and CJ-32, Peek 3000 and 9200, and LMD 8000 controllers. I also have worked on Eagle Epac, Wapiti 170's and VS-Plus controllers. These range between NTCIP, NEMA TS-1, NEMA TS-2, and CalTrans TEES Control environment.
What does all this mean? Well, the devil is in the details.
Traffic signals can be very complicated devices. Traffic signals may be pre timed, semi actuated, fully actuated, coordinated, uncoordinated or running with an adaptive algorithm. The vehicles can be undetected, Or detected by a variety of methods. Vehicle detection can be accomplished via pressure plates (very rare now), or detected by a variety of inductive loop wires, video detection and radar detection.
There are a variety of brands, makes, models, software versions and standards. I have extensive experience with Naztec Apogee, Econolite ASC/3, ASC/2 and 2/S and 8000, Traconex J-9, CJ and CJ-32, Peek 3000 and 9200, and LMD 8000 controllers. I also have worked on Eagle Epac, Wapiti 170's and VS-Plus controllers. These range between NTCIP, NEMA TS-1, NEMA TS-2, and CalTrans TEES Control environment.
What does all this mean? Well, the devil is in the details.
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