Map matching based on multi-layer road index

Zhouhao Wu, Jun Xie, Yuanqing Wang*, Yu (Marco) Nie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study develops a new map matching algorithm targeting off-line applications. The algorithm takes a holistic view of the entire GPS trajectory and finds its match by first dividing it into several segments. This segmentation is made possible through creating a multi-layer road index system for the original road network. For each segment, a global map matching strategy is employed to identify the best match. The algorithm is compared against three state-of-the-art map matching algorithms from the literature. To get ground truth data, we design and perform numerous test drives with predefined paths that have a total length of 234 km. GPS trajectories recorded during the test drives are used to evaluate the algorithms. Our numerical experiments show the proposed algorithm improves match efficiency by up to two order of magnitude compared to the benchmark algorithms. Importantly, it achieves this remarkable speedup with negligible losses in matching accuracy.

Original languageEnglish (US)
Article number102651
JournalTransportation Research Part C: Emerging Technologies
Volume118
DOIs
StatePublished - Sep 2020

Keywords

  • GPS trajectory
  • Map matching
  • Multi-layer road index

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Transportation
  • Computer Science Applications

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