Appendix B: Spatial Data Consolidation This analysis used North Central Texas Council of Governments (NCTCOG) centerlines as the basis for the analysis. This was chosen over the City of Fort Worth’s centerlines, as the city’s centerline data only contained geometry for streets within its jurisdictional boundary. In some locations, this left gaps on roadways that traversed in and out of the city, which would have caused issues when consolidating data from other sources where all roadways are included. This approach also helped account for edge effect, where roads that form part of a boundary may assigned to a neighboring city. Like crashes, this regional network was then flagged as comprising the study area based on meeting any of the following criteria:
• NCTCOG data identified the source as “City of Fort Worth”
• > 50% of the segment’s length was within a 30 ft buffer of the City of Fort Worth
Functional Classification Functional classification came from several sources. For segments that were within the City of Fort Worth, the city’s functional classification system was used. Segments outside the city were assigned to their equivalent City of Fort Worth classification based on a combination of the NCTCOG’s regional and local authority’s classifications. Lane Count Lane count data for the streets within the City of Fort Worth was available, but as part of a separate pavement dataset that did not have a linking ID back to the centerline dataset. The lane count from the pavement was conflated to the network. Next, for areas outside the City of Fort Worth, lane counts were conflated from the TxDOT Roadway Inventory. The TxDOT roadway dataset had fully populated lane count data, although it did not have geometry to represent every centerline segment within the study area. Adjustments were made to account for locations where the roadways were represented differently between the two datasets. For example, the same road may be represented as one two-way segment in the TxDOT dataset and as two one-way segments in the NCTOG dataset. If the TxDOT lane
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