01552831

Component

https://doi.org/10.3141/2490-04

This paper introduces the Halphen system as a toolbox for modeling travel time variability. The three distributions of the Halphen family and the moment–ratio diagram (MRD), a graphical tool for selecting the best distribution given a specific data set, are presented. The mapping between the positions of travel time samples on the MRD and traffic conditions based on mesoscopic traffic simulation was explored. A comprehensive supply–demand scenario enabled a comparison between day-to-day and hour-by-hour travel time variability in terms of selection of the optimal distribution. The results highlight the capability of the Halphen system to model a wide range of traffic conditions. This flexible tool has the potential to be integrated into a practice-ready decision support system for modeling travel time variability at the network scale.

01582745

15-0195

English

pp 32–40

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309369206

Print

Figures (7) ; References (37)

Distributions (Statistics); Mesoscopic traffic flow; Simulation; Time intervals; Traffic simulation; Travel time

Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Dec 30 2014 12:13PM

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