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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of Models to Estimate Percent Time Spent Following on Two-Lane Highways

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Author(s):
Bessa, Jr., Jose Elievam ; Setti, Jose Reynaldo ; Washburn, Scott S.
Total Authors: 3
Document type: Journal article
Source: JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS; v. 143, n. 5 MAY 2017.
Web of Science Citations: 2
Abstract

Four analytical models to estimate percent time spent following (PTSF) on two-lane highways were tested with data from 16 sites in Brazil. Besides percent following, the models are based on shockwave analysis, moving-bottleneck theory, or queuing theory. As direct measurement of the PTSF is impractical, PTSF values produced by a simulation program were the basis for comparison (observed PTSF values). The quality of the PTSF estimates produced by the four models was tested using 442 observations and four goodness-of-fit functions {[}mean normalized error (MNE), mean absolute normalized error (MANE), root-mean squared normalized error (RMSNE), and correlation coefficient r]. Although some degree of correlation between the estimated and observed PTSF values was detected, none of the four models was able to provide reliable estimates of PTSF, as indicated by high mean normalized errors (around 35%) and mean absolute normalized errors that were, on average, close to 50%. (C) 2017 American Society of Civil Engineers. (AU)

FAPESP's process: 13/04267-1 - Measures of effectiveness for two-lane rural highways in Brazil
Grantee:José Elievam Bessa Júnior
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 10/01809-0 - Measures of effectiveness for quality of service evaluation on two-lane rural highways in Brazil
Grantee:José Elievam Bessa Júnior
Support Opportunities: Scholarships in Brazil - Doctorate