This project established a mobile 4G network infrastructure. It has the capability to track vehicles and track circuits to locate trains. The network also has GPS capabilities. 4G infrastructure has been installed, extension to vehicles is ongoing.
| Source | Flow | Destination | Status |
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| Chicago Transit Authority Active Transit Station Signs | transit information user request | Chicago Transit Authority ATSS System | Existing |
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| Chicago Transit Authority Active Transit Station Signs | transit information user request | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | driver instructions | Chicago Transit Authority Rapid Transit Vehicles | Existing |
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| Chicago Transit Authority ATSS System | emergency evacuation coordination | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | personal transit information | RTA/NITA Multimodal Trip Planner | Existing |
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| Chicago Transit Authority ATSS System | transit and fare schedules | Regional Transportation Authority Travel Information Center (TIC) | Existing |
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| Chicago Transit Authority ATSS System | transit and fare schedules | RTA/NITA Transit Hub | Existing |
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| Chicago Transit Authority ATSS System | transit emergency coordination data | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | transit passenger certification check | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | transit passenger certification confirm | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | transit schedule adherence information | Regional Transportation Authority Travel Information Center (TIC) | Existing |
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| Chicago Transit Authority ATSS System | transit schedule adherence information | RTA/NITA Transit Hub | Existing |
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| Chicago Transit Authority ATSS System | transit traveler information | Chicago Transit Authority Active Transit Station Signs | Existing |
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| Chicago Transit Authority ATSS System | transit traveler information | Chicago Transit Authority BusInfo Signs | Existing |
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| Chicago Transit Authority ATSS System | transit traveler information coordination | Chicago Transit Authority Control Center | Existing |
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| Chicago Transit Authority ATSS System | transit traveler information coordination | Regional Transportation Authority Travel Information Center (TIC) | Existing |
|---|
| Chicago Transit Authority ATSS System | transit traveler information coordination | RTA/NITA Transit Hub | Existing |
|---|
| Chicago Transit Authority BusInfo Signs | transit information user request | Chicago Transit Authority ATSS System | Existing |
|---|
| Chicago Transit Authority Control Center | driver instructions | Chicago Transit Authority Rapid Transit Vehicles | Existing |
|---|
| Chicago Transit Authority Control Center | emergency evacuation coordination | Chicago Transit Authority ATSS System | Existing |
|---|
| Chicago Transit Authority Control Center | transit emergency coordination data | Chicago Transit Authority ATSS System | Existing |
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| Chicago Transit Authority Control Center | transit passenger certification check | Chicago Transit Authority ATSS System | Existing |
|---|
| Chicago Transit Authority Control Center | transit passenger certification confirm | Chicago Transit Authority ATSS System | Existing |
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| Chicago Transit Authority Control Center | transit traveler information | Chicago Transit Authority Active Transit Station Signs | Existing |
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| Chicago Transit Authority Control Center | transit traveler information coordination | Chicago Transit Authority ATSS System | Existing |
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| Chicago Transit Authority Control Center | transit traveler information coordination | Metra Passenger Information Display System | Existing |
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| Metra Passenger Information Display System | transit traveler information coordination | Chicago Transit Authority Control Center | Existing |
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| Regional Transportation Authority Travel Information Center (TIC) | transit traveler information coordination | Chicago Transit Authority ATSS System | Existing |
|---|
| RTA/NITA Multimodal Trip Planner | transit information user request | Chicago Transit Authority ATSS System | Existing |
|---|
| RTA/NITA Transit Hub | transit traveler information coordination | Chicago Transit Authority ATSS System | Existing |
|---|