01701640

Component

https://doi.org/10.1177/0361198119838983

Integration of various datasets is crucial given the emphasis placed on holistic reporting of performance measures of various variables related to road transportation by the Moving Ahead for Progress in the 21st Century (MAP-21) Act. None is more confounding than the merger of geospatial datasets, which is necessary, for example, to combine vehicle travel time and volume information for road segments. Such a merged dataset is released through the National Performance Management Research Dataset (NPMRDS). The NPMRDS is supposed to exclusively cover the National Highway System (NHS) and Strategic Highway Network (STRAHNET) sub-selected from the Highway Performance Monitoring System (HPMS). However, one finds that the coverage is not perfect. There are not only many extra road segments included in the NPMRDS, but also some NHS/STRAHNET roads segments are not fully covered by corresponding NPMRDS segments. Further, one finds very little literature about the method Texas Transportation Institute uses to orchestrate the conflation. Therefore, it was endeavored to create a conflation algorithm which might perform better. The benchmark for the proposed algorithm is the identification of the segments wrongly conflated during the creation of the NPMRDS geospatial dataset. The proposed methodology uses a combination of five measures of similarity between the HPMS and NPMRDS segments. The proposed method successfully identifies significant numbers of mismatched segments: about 5% excess NPMRDS segments, and about 3% HPMS segments without NPMRDS counterpart.

19-05365

English

pp 583-592

2019-4

Transportation Research Record: Journal of the Transportation Research Board

Digital/other

Figures (7) ; References (23)

Algorithms; Data files; Data fusion; Geometric segments; Highways; Performance measurement; Spatial analysis; Traffic data; Traffic volume; Travel time

Geospatial analysis

Highway Performance Monitoring System; Moving Ahead for Progress in the 21st Century Act (MAP-21); National Highway System; National Performance Management Research Data Set (NPMRDS); Strategic Highway Corridor Network

Performance management

Data and Information Technology; Highways; Planning and Forecasting

TRIS, TRB, ATRI

Mar 4 2019 12:42PM