Ethernet Products for Traffic Control Systems |
As streets and highways become more congested, traffic engineers and planners continue to look for better ways to improve traffic flow within the existing infrastructure and road system. Video surveillance cameras have grown in popularity and use as an effective tool for traffic control and management. Video cameras can provide real time, full-motion feedback as traffic problems develop, whether at a city intersection or on a major freeway. |
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Traditionally, serial communications lines have been employed to transmit traffic control signals. However, live video, as part of an intelligent transportation system (ITS), requires a transmission bandwidth up to 100 times greater than the standard serial links. Furthermore, the video signal often must be transmitted over a distance of several miles, usually to a central traffic operations center (TOC). Fiber optic cabling is the preferred medium to carry the video signal, since fiber optic cabling has a very large bandwidth and is immune to magnetic interference.
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The combination of high bandwidth demand along with fiber cabling has resulted in the emergence of Ethernet as the protocol of choice for traffic control and video surveillance systems. Ethernet’s virtually unlimited bandwidth, ruggedness, scalability, and inexpensive systems components make it a natural for the new generation of Intelligent Transportation Systems (ITS).
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Ethernet Applications in Traffic Control
Demand for Bandwidth Makes Ethernet the Preferred Protocol
It stands to reason that Ethernet will become the edge protocol of choice in the traffic control market and become a popular and cost-effective backbone protocol as well. It is time for traffic systems to move out of the telephone age (serial lines) into the Internet age (IP packet data). |
| The Magnum line by GarrettCom offers a selection of hardened outdoor products with fiber built-in for both stand-alone operation and board-level configuration for the model 2070 traffic controllers, the new Magnum ITS Blade. Magnum units are rated -40°C to 75°C operation for the temperature uncontrolled environments often found in traffic systems. |
The following Magnum products are ideal for ITS: |
Edge Switches:
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Magnum ES42 Edge Switch
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Magnum Converter Switch Family (100 Mb or 10Mb fiber, 10/100 Mb RJ-45)
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Magnum 6K16V Managed Fiber Switch (10/100/1000 Mb)
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Magnum mP62 Managed Hardened Switch (10/100 Mb)
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Magnum P62F Hardened Switch (10/100 Mb)
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Middle Switch:
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Magnum 6K16 16-port Modular Managed Carrier Class Switch
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Magnum 6K25 25-port Managed Fiber Switch (10/100/1000 Mb)
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Magnum 6K32 32-port "High Density" Managed Switch
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Magnum 6K32F 32-port Fiber Industrial Managed Switch
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Magnum 6K32FC Convection-cooled Industrial Managed Switch
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Magnum 6K32T 25-port Managed Fiber Switch (10/100/1000 Mb)
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Magnum 6K32TRC 32-port "High Density" Managed Switch
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Converter Switch:
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Magnum CS14P, 10/100 Switch plus 100 Mb fiber-NEW!
Magnum CSN14P, 10/100 Switch plus 10 Mb fiber
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Board-level Switch for 2070 Traffic Controllers:
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Media Converters:
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Magnum 14EH (Hardened, 100 Mb)
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Magnum TB14H (Hardened, 10 Mb)
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Magnum FT14H (Hardened,10 Mb)
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