Palo Alto uses GarrettCom in advanced transportation systems (ATMS)

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Located in the heart of Silicon Valley where the development of the Ethernet networking standard took place, the City of Palo Alto took a close look at how the newer 100 Mb and 1 Gigabit Ethernet technologies could provide a cost-effective, comprehensive traffic solution that could be upgraded easily as technology and bandwidth demands increased. The Utilities Department had recently installed a fibre-optic network which was available for lease to the Traffic Department, providing a ready-made, high-availability, noise interference-free communications system.

GarrettCom provided a combination of ITS-Blade cards, which slide neatly into McCain’s 2070L controllers to provide Ethernet connectivity, and P62F Premium-rated Switches for outdoor use in the older 2070 boxes that did not accommodate an Ethernet card. GarrettCom 6K25 switching hubs in City Hall and in the TMC complete the Ethernet package.

Download application note: Palo Alto uses GarrettCom in advanced transportation systems (ATMS) [PDF]

Texas DOT uses hardened Ethernet switches and wireless for traffic control

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To monitor and manage traffic flow, and to view accidents for better emergency response, TxDOT wanted to send video back to the Ft Worth Traffic Control Centre (TCC) from 150 of the busiest intersections in the city. When there was a problem at one of the intersections off of a Ft Worth exit ramp, traffic tended to back up onto the main highway and slow traffic along an extended section of the highway.

TxDOT chose GarrettCom’s hardened P62 switches to provide Ethernet connectivity, 100Mb bandwidth, and reliable operation in extreme temperature weather environments. The P62 Switches were designed for outdoor deployment, and feature a unique thermal technique (patent pending) using the case as a heat sink in order to get the heat out of the electronics. The resulting lowered temperature electronics increases reliability.

Download application note: Texas DOT uses hardened Ethernet switches and wireless for traffic control [PDF]

West Des Moines moves to sophisticated ATMS system

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West Des Moines used Traffic Systems Solutions Company (TSSC) to assist in a system design that looked ahead to all the opportunities that current technology could bring. The ability to monitor traffic conditions and modify real-time traffic flow during natural hazards such as snow, ice, and flooding, as well as man-made ones such as detours, construction, and roadway incidents, was highly attractive. One of the key components for the success of the system was the identification of field-hardened IP networking and video equipment that could reliably function in extreme weather conditions.

TSSC chose two of GarrettCom’s field-hardened switches. P62F Ethernet switches support direct field connection to Ethernet radios, Siemens M50 Series traffic controllers and other devices which have IP addressing. In addition, the West Des Moines system design required space-saving Ethernet cards to be directly installed into some M50 controllers.

Download application note: West Des Moines moves to sophisticated ATMS system [PDF]

GarrettCom Uses PS14P PoE Switch to Power Security Network at Its Corporate HQ

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GarrettCom wanted to expand its corporate security network by adding a series of video cameras in different locations of its headquarters, typically one pointed at each outside door. The video records would be saved and would be viewable from outside over the Internet in case of a security incident. Like a lot of companies seeking to install surveillance cameras, GarrettCom did not have AC power outlets in some of the desired camera locations.

Traditionally, cameras would require AC power in order to operate. GarrettCom found that many of the cameras now available have have a built-in Power over Ethernet (PoE) port that would eliminate the AC power requirement. GarrettCom knew that some vendors in the market were offering products known as “midspan solutions” -- a patch-panel sort of device that could be added and used with a standard Ethernet switch to add PoE power for the cameras.

GarrettCom always believed this would be a cumbersome approach.

Download application note: GarrettCom Uses PS14P PoE Switch to Power Security Network at Its Corporate HQ [PDF]

Virginia DOT interchange uses GarrettCom switches to manage traffic

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VDOT consulted with S.Rock/Estabrook Corp. to develop a system that could handle the traffic demands of this busy interchange. Tunnels and bridges pose particular challenges in traffic management. Once a traffic incident occurs, moving traffic around blockages is very difficult. Both prevention of incidents – such as over-height trucks entering tunnels – and early warnings to motorists that can route them around bottlenecks are critical to smooth traffic flow.

GarrettCom’s Hardened mP62 switches in field cabinets and 6K16 managed switches are deployed along the Pinners Point roadway and in the Midtown Tunnel to relay information to the VDOT Traffic Control Center (TCC). The traffic controller consults video cameras spaced along the roadways to pinpoint the incident site. GarrettCom’s S-Ring™ Redundancy Management Software facilitates rapid self-healing should a break in the Ethernet LAN communications ring occur.

Download application note: Virginia DOT interchange uses GarrettCom switches to manage traffic [PDF]

6K switches network Tampa CrossTown Expressway

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Transdyn is responsible for the design, development, integration, commissioning, and support of the project requiring a number of Intelligent Transportation Systems (ITS) components to manage, control and operate the roadway. The new system integrates and automates various ITS functions such as warning gates, barrier gates, variable and changeable message signs, video surveillance, vehicle detection and verification, and traffic information dissemination.

The application uses multiple 100 Mb Ethernet rings using GarrettCom 6K16V managed switches to link the video cameras, with each of the rings connected to a Gb backbone link to the TMC.

Download application note: 6K switches network Tampa CrossTown Expressway [PDF]

Connexion Uses 6K32T's for Video Security & Communication Services in Condo Complexes

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Connexion turned to its network integrator, CSC Communication Supply Corporation in Raleigh. Connexion wanted CSC to provide a hardened managed switch to deliver high speed Internet and Video Security to its residential communities.

The switch needed to have a high port count and be hardened enough to be mounted in an uncontrolled closet where temperatures can reach 130°F.

CSC called in GarrettCom.

Download Application Note: Connexion Uses 6K32T's for Video Security & Communication Services in Condo Complexes [PDF]

Computer Data Networks Builds Security Network for Palm Island, Dubai

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Computer Data Networks was awarded a contract to design, supply and implement a large Security Network consisting of over one hundred hardened outdoor Ethernet switches and high-availability core switches for use in critical security applications around the unique, man-made Jumeirah Palm Island in Dubai.

Jumeirah Palm Island was constructed as a mixed-use development of commercial, retail, residential and hospitality suites, providing all the facilities that would be expected in one of the world’s most costly and exclusive resorts. Included in the state-of-the-art security network are access control, parking management, video security systems . . . all networked over Ethernet and requiring robust hardware to ensure maximum network reliability.

Download application note: Computer Data Networks Builds Security Network for Palm Island, Dubai [PDF]

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