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Title:

Speed-Flow Relationship and Capacity for Expressways in Brazil

Accession Number:

01517567

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This paper presents the development of a speed-flow model for expressways in Brazil, similar to the one used in the HCM 2010. The model was developed using a sample of 788,122 observations, collected at 24 stations on four expressways in the state of São Paulo. The data analysis showed that, as proposed by the HCM 2010, there is range of flows in which the average speed of the passenger cars remains constant and equal to the free flow speed. It was also found that the classification scheme used by the HCM 2010, based on control of access (freeways vs. multilane highways), is not adequate for expressways in the state of São Paulo. A new scheme, which divides expressways into urban and rural sections, is proposed. For these highway classes, representative values for the capacity were found, and speed-flow relationships were calibrated.

Supplemental Notes:

This paper was sponsored by TRB committee AHB40 Highway Capacity and Quality of Service.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-1707

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Riente de Andrade, Gustavo
Setti, José Reynaldo

Pagination:

18p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

Highway Capacity Manual 2010

Geographic Terms:

Sao Paulo (Brazil)

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-1707

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 2:37PM