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Title:

Comparison of Door-to-Door Transit Travel Time Estimation Using Schedules, Real-Time Vehicle Arrivals, and Smartcard Inference Methods

Accession Number:

01778690

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/03611981

Abstract:

Estimating passengers’ door-to-door travel time, for journeys that combine walking and public transit, can be complex for large networks with many available path alternatives. Additional complications arise in tap-on only transit systems, where passengers alightings are not recorded. For one such system, the Chicago Transit Authority, this study compares three methods for estimating door-to-door travel time: assuming optimal path choice given scheduled service, as represented in the General Transit Feed Specification (GTFS); assuming optimal path choice given actually operated bus service, as recorded by automatic vehicle location systems; and using inferred path choices based on automated fare collection smartcard records, as processed with an origin-destination-interchange (ODX) inference algorithm. As expected, ODX-derived travel times are found to be longer than those derived from GTFS, indicating that purely schedule-based travel times underestimate the travel times that are actually available and experienced, which can be attributed primarily to suboptimal passenger route choice. These discrepancies additionally manifest in significant spatial variations, raising concerns about potential biases in travel time estimates that do not account for reliability. The findings bring about a more comprehensive understanding of the interactions between transit reliability and passenger behavior in transportation research. Furthermore, these discrepancies suggest areas of future research into the implications of systematic and behavioral assumptions implied by using conventional schedule-based travel time estimates.

Supplemental Notes:

1. The GTFS data is obtained from CTA’s published feed and is publicly available at: https://openmobilitydata.org/p/chicago-transit-authority/165 © National Academy of Sciences: Transportation Research Board 2021.

Language:

English

Authors:

Li, Ting
Meredith-Karam, Patrick

ORCID 0000-0001-6245-3257

Kong, Hui

ORCID 0000-0001-6048-9440

Stewart, Anson

ORCID 0000-0002-3862-1393

Attanucci, John P
Zhao, Jinhua

ORCID 0000-0002-1929-7583

Pagination:

pp 1003-1014

Publication Date:

2021-11

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Volume: 2675
Issue Number: 11
Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Web

Features:

References (52)

Identifier Terms:

Chicago Transit Authority

Subject Areas:

Data and Information Technology; Highways; Passenger Transportation; Public Transportation

Files:

TRIS, TRB, ATRI

Created Date:

Jul 23 2021 3:12PM