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Title:

Testing for Aggregation Effects in Short-Term Traffic Flow Time-Series

Accession Number:

01152546

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Time series data are an invaluable tool in studying transportation phenomena. An issue that is often ignored in transportation time series analysis practice is the effect of temporal aggregation bias. Aggregation has direct implications to the temporal structure of time series, because it leads to “smother” series or alters many important properties that exist in the disaggregated frequency. However, many researchers suggest that data should be aggregated to avoid the effects of noise and spurious oscillations. We analyze the effect of data aggregation on traffic volume and occupancy series. Results indicate that aggregation may suppress the long memory characteristics of traffic flow.

Monograph Accession #:

01147878

Report/Paper Numbers:

10-0401

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Karlaftis, Matthew G
Vlahogianni, Eleni I

Pagination:

11p

Publication Date:

2010

Conference:

Transportation Research Board 89th Annual Meeting

Location: Washington DC, United States
Date: 2010-1-10 to 2010-1-14
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (4) ; References (49) ; Tables (1)

Candidate Terms:

Data aggregation

Subject Areas:

Data and Information Technology; Highways; Operations and Traffic Management

Source Data:

Transportation Research Board Annual Meeting 2010 Paper #10-0401

Files:

BTRIS, TRIS, TRB

Created Date:

Jan 25 2010 10:13AM