Sharing Operations Data Among Agencies (2014) / Chapter Skim
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Pages 27-34
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27 Based on the findings of the web-based survey and the literature review, a diverse set of TMCs, partnerships, law enforcement, and transit providers were interviewed from a cross section of the country. Twenty-six interviews were conducted across the United States and in the Netherlands (Figure 26)
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28 FIGURE 26 Map of agencies sought for in-depth interviews regarding operations data sharing.
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29 of any roadway incident and is often the first on the scene and the last to leave. Because of their presence, CHP are viewed as the primary information source for incident details.
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30 FIGURE 28 Screenshot from the California Highway Patrol's public CAD log available at http://cad.chp. ca.gov/Traffic.aspx.
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31 third-party integrators to access select incident types -- usually those related to transportation events, and then disseminate only those events to VDOT and a few other agencies. VDOT directs the data feeds directly into its TMC software -- making access to the CAD data virtually seamless to the operators.
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32 compared with prior year traffic congestion statistics, it is estimated that the use of these shared data resources largely contributed to a 50% reduction in traffic queues (44)
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33 as it at least helps the private sector to know where to focus its attention and investigate further. Each private sector provider noted that it could attribute the loss or gain of several lucrative contracts as a result of CCTV sharing from public agencies.
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34 SUMMARY OF BUSINESS CASES All agencies interviewed were capable of noting, at least anecdotally, the benefits of sharing operations data; however, when pressed to quantify the benefits in financial or engineering terms most agencies had difficulties. The following were consistently cited as important benefits from information sharing: • Reduced incident detection, verification, response, and clearance times to quickly re-establish normal capacity and conditions; • Enhanced safety for motorists and field and safety personnel; • Reductions in the number of secondary crashes that occur as a result of the primary incident; • Reduced motorist costs (fewer delays, decreases in travel times, increase in reliability, etc.)
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