Evaluation of Freeway Traffic Data Acquisition: Technology, Quality, and Cost or A Comparative Analysis of Alternative Travel Time Data Sources on I-80 Freeway

Zhang, Michael; Hou, Zenghao; Zhang, Xingyang

i

Evaluation of Freeway Traffic Data Acquisition: Technology, Quality, and Cost or A Comparative Analysis of Alternative Travel Time Data Sources on I-80 Freeway

2020-03-04
By Zhang, Michael ; Hou, Zenghao ; Zhang, Xingyang

File Language:

English

Details

Creators:

Zhang, Michael ; Hou, Zenghao ; Zhang, Xingyang
Corporate Creators:

University of California, Davis. Department of Civil and Environmental Engineering ; Cornell University. Center for Transportation, Environment, and Community Health
Corporate Contributors:

California Department of Transportation ; United States. Department of Transportation. University Transportation Centers (UTC) Program
Subject/TRT Terms:
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report 06/15/2017 - 06/14/2019
Corporate Publisher:

Cornell University. Center for Transportation, Environment, and Community Health. (CTECH)
Abstract:

This study evaluates the accuracy of the travel time data that are estimated by Dual loop, Waze, HERE, and INRIX against Bluetooth data on multiple segments of the I-80 freeway between Davis and Sacramento, CA. The authors conduct a simulation-based critical sampling rate analysis, which suggests that the Bluetooth travel time data qualifies for approximating the ground truth. Further, the authors apply evaluation methods and derived indices, Travel Time Error Bias (TEB), Average Absolute Travel Time Error (ATE), and Standard Error of Mean (SEM), to compare the travel time data reported by Waze, HERE, and INRIX with the benchmark (Bluetooth) data on the selected testing segments on I-80. The results show that the INRIX and HERE data closely match the Bluetooth data, both in the trends and values of reported travel time. Moreover, all three vendors’ data accuracy deteriorates when the traffic congestion intensifies.
Format:

PDF
Funding:

69A3551747119
Download URL:

https://rosap.ntl.bts.gov/view/dot/54915/dot_54915_DS1.pdf
File Type:

[PDF - 1.15 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:4af5aef1932480a105b8ce42256fdc135d9a4015c5b50956a42f6da7fe78def52a72c9842c1ad546a686be8a3595536895f9f3340b2c05cfd199741aa6c5d483

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.