Roadway Safety Data Interoperability Between Local and State Agencies (2014) / Chapter Skim
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Pages 9-22
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From page 9... ...
9 Data collection practices for crash, roadway, and traffic data are discussed in further detail in the following sections. CRASH DATA Local Agency Survey Results Crash data are the data contained in the crash reports submitted after a collision (e.g., date, time, location, crash type, and severity)
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10 In Iowa, police agencies use the Traffic and Criminal Software (TraCS) (Figure 5)
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11 with minimal or no shoulders and steep slopes that may pose a potential safety concern. Through the TraCS tool, law enforcement officials report all crashes to the online database, which can be accessed by the county engineers.
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12 states (survey respondents were given the option to choose all that apply)
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13 the state, two reported that they review and revise the data and send the revised data back to the local agencies. Eighteen of 41 states responded that they maintain at least some supplemental data on local roads (e.g., signs, signals, pedestrian, etc.)
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14 0 5 10 15 20 25 30 State collects Locals collect and provide to state Do not maintain intersection data N um be ro fS ta te Re sp on se s Intersection Data Status FIGURE 9 Intersection data on local roads maintained by state. 0 5 10 15 20 25 30 State collects Locals collect and provide to state Do not maintain supplemental data N um be ro fS ta te Re sp on se s Supplemental Data Status Local FIGURE 10 Supplemental data on local roads maintained by state.
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15 they could submit the data, which they then presented to the secretary of transportation. From this need, the Wisconsin DOT (WisDOT)
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16 • Having support from both DOT management and local agencies • Being able to show progress • Using solid project management methods, including a Business Model Report, from the user perspective that demonstrated how the design will fulfill the scope and objectives. Additional important considerations for undertaking this type of effort include the maintenance of the data.
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17 crash data on 30,000 miles of state and functionally classified routes. They are working toward inputting the local road crash data to incorporate it with the local road inventory data obtained in 2012.
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18 operations and control data for local roads, eight provide it to local agencies. Of the states where local agencies collect and provide data to the states, five responded that they review/ revise the data and provide it back to the local agencies.
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19 collection and sharing of traffic data, as shown in Table 6. For example, one state responded that they provide traffic data to the local agency, but the local agency responded that the state does not provide traffic data.
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20 these roadways to produce estimates of vehicle-miles traveled (VMT)
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21 traffic. Sixteen of 43 states responded that they provide guidance in terms of data dictionaries, format requirements, collection guidebooks, etc., to local agencies for safety data collection.
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22 Wisconsin WISLR WisDOT developed the web-based GIS products -- WISLR to collect, store, and share data on local roads. Susie Forde Data Management Section Chief Wisconsin DOT, Bureau of State Highway Programs susie.forde@dot.wi.gov 608-266-7140 http://www.dot.state.wi.us/loc algov/wislr/index.htm Tennessee Local Road Inventory TennDOT GIS Mapping and Facilities Data Office updated existing local road inventory and collected GPS center lines on the local roads to complete the LRS spatial network.
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