Analysis of the statistical distributions of freeway traffic flow and occupancy data in Taiwan

Shou-Ren Hu, C. C. Chou, Y. N. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To realize the relationship between traffic flow and occupancy of the national freeway system in Taiwan, this study analyzes the statistical distributions of traffic flow and occupancy data collected by vehicle detectors of the Freeway No. 1. The Kolmogorov-Smirnov test was adopted to test and analyze the statistical distributions of traffic flow by individual occupancy intervals, and the statistical distributions of occupancy by individual traffic flow levels. The numerical study results indicate that the traffic flow in individual occupancy intervals shows a normal distribution. We deduce that the expected value can present traffic flow in individual occupancy intervals. In addition, the mean value and mode value of traffic flow in individual occupancy intervals exhibits a continuous two-region concave curve relationship. The findings of this study would have policy implications for the freeway bureau in conducting related traffic control strategies and providing road users with traffic bottleneck information for traffic rerouting and other purposes.

Original languageEnglish
Title of host publicationProceedings of the 20th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2015
Subtitle of host publicationUrban Transport Analytics
EditorsSylvia Y. He, Yong-Hong Kuo, C.H. Cheng, Janny M.Y. Leung
PublisherHong Kong Society for Transportation Studies Limited
Pages363-370
Number of pages8
ISBN (Electronic)9789881581440
StatePublished - 1 Jan 2015
Event20th International Conference of Hong Kong Society for Transportation Studies: Urban Transport Analytics, HKSTS 2015 - Hong Kong, Hong Kong
Duration: 12 Dec 201514 Dec 2015

Publication series

NameProceedings of the 20th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2015: Urban Transport Analytics

Conference

Conference20th International Conference of Hong Kong Society for Transportation Studies: Urban Transport Analytics, HKSTS 2015
CountryHong Kong
CityHong Kong
Period12/12/1514/12/15

Keywords

  • K-S test
  • Occupancy
  • Statistical distribution
  • Traffic flow

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