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and traveler information for major arterial highways interconnecting Washington and Baltimore to the US 50 corridor servicing the Eastern Shore recreational areas. As the SHA, MdTA, and MSP began planning incident management and traveler information services for the Washington, Baltimore, Annapolis, and Frederick transportation grid, lessons learned from the “Reach the Beach” experience provided valuable insight to identify contemporary CHART requirements.

CHART operations is currently based on a “hub and satellite” architecture which is comprised of a SOC supported by three regional TOCs (Golden Ring MSP Barracks, Greenbelt MSP Barracks, and Montgomery County Transportation Management Center) and two seasonal TOCs (located at MdTA Bay Bridge to support “Reach the Beach” and SHA La Vale District Office to handle winter weather conditions in the Western Maryland mountain region). The TOCs focus on managing peak traffic periods, rapid clearing of local incidents, and providing traveler information about conditions along major highways. The SOC is projected to be shadowed by the MdTA Authority Operations Center (AOC), located at its Fort McHenry Tunnel headquarters as a fail over site in the event of a catastrophic failure of the SOC.

In addition to Maryland traffic management concerns, the SHA, MdTA, and MSP have joined forces with 25 Northeast Corridor transportation authorities from Virginia to Maine–including State DOTs, Toll Authorities, and Transit Operators–by participating in the I-95 Corridor Coalition. The Coalition’s primary mission is to coordinate information on real time surface transportation system conditions for the benefit of travelers and public safety authorities. Each individual agency is pursuing the deployment of ITS technology, albeit at their own pace and funding levels. The Coalition serves as the “glue” for the Northeast Corridor surface transportation system to help achieve a “seamless” travel network across jurisdictional boundaries.

An important goal of the CHART historical information review process was the generation of comprehensive data tables, included in Section 2.7.  These tables summarize: the technical functions performed by all existing and future field devices to be included in the system; physical access requirements or constraints for each device type;  the geographic location of and spacing between these devices; the frequency and length of messages from the device to the controller; power requirements; environmental needs such as controlled environmental vaults (CEVs);  and the timeline for device deployment.

S2_1.DOC2-311/29/96

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