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TREC Friday Seminar Series Transportation Research and Education Center (TREC)

1-22-2016

Utilizing High Resolution Bus GPS Data to Visualize Utilizing High Resolution Bus GPS Data to Visualize

and Identify Congestion Hot-spots in Urban Arterials and Identify Congestion Hot-spots in Urban Arterials

Nicholas B. Stoll Portland State University, nbstoll@gmail.com

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Recommended Citation Recommended Citation Stoll, Nicholas B., "Utilizing High Resolution Bus GPS Data to Visualize and Identify Congestion Hot-spots in Urban Arterials" (2016). TREC Friday Seminar Series. 91. https://pdxscholar.library.pdx.edu/trec_seminar/91

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Utilizing High-Resolution Bus GPS Data to Visualize and Identify Congestion Hot Spots in Urban Arterials

Project PI — Miguel A. FigliozziGRAs — Nicholas B. Stoll & Travis B. Glick

Friday, January 22nd, 2016

Presentation Overview

• Background & Purpose• Methodology• Data visualizations

• Point Level• Segment Level

• Delay Analysis• Next steps and future research ideas

Background & Purpose

• Utilize a new data set

• 5 Second Resolution (“breadcrumb”)

• Buses as speed probes

• Build upon previous research

5-SR Data Analysis

450 ft.50 ft. 100 ft. 150 ft. 200 ft. 250 ft. 300 ft. 350 ft. 400 ft.

Time 1

Time 2

Time 3

5-SR Data Analysis

450 ft.50 ft. 100 ft. 150 ft. 200 ft. 250 ft. 300 ft. 350 ft. 400 ft.

Time 2

Time 3

Speed 1

Speed 2

Speed 3

C ≈ 0.49

C ≈ 0.15

C ≈ 0.97

C = Centerness Factor

Time 1

5-SR Data Analysis

450 ft.50 ft. 100 ft. 150 ft. 200 ft. 250 ft. 300 ft. 350 ft. 400 ft.

Time 2

Time 3

Speed 1

Speed 3

Speed 2

C ≈ 0.65

C ≈ 0.71

C ≈ 0.34

C = Centerness Factor

Time 1

5-SR Data Analysis

450 ft.50 ft. 100 ft. 150 ft. 200 ft. 250 ft. 300 ft. 350 ft. 400 ft.

Time 2

Time 3

Speed 1

Speed 2

Speed 3

C ≈ 0.30

C ≈ 0.56

C ≈ 0.38

C = Centerness Factor

Time 1

5-Second Resolution Data

Point Distribution

Point Distribution at Bus Stops for buses that STOPPowell and 87th

12th & Milwaukie

Powell and 82nd

W

W

W

Powell and 87th Powell and 82ndW W Powell and 87thW

Route Segment Visualizations

Urban Corridor

Westbound Route 9 – Points of Interest

Lets Start Here -SE Powell and Milwaukie (12th)

Bus Stop (BS)Intersection (INT)

B

B

A

A

Speed profile for all buses over 1 daySpeed (1 day)

A

B

Speed (5 day)

A

B

Speed profile for all buses over 5 days

A

B

Westbound Route 9 -3400 ft. Segment from 92nd to 78th

BS-87th

BS-90thBS-84th

SE Powell & 82nd

BS-82nd

BS-79th

Westbound

Bus Stop (BS)Intersection (INT)

Bus Stop (BS)Intersection (INT)

Bus Stop (BS)Intersection (INT)

Bus Stop (BS)Intersection (INT)

Route Segment Visualizations

Urban Streets

• ABC

Downtown SW 4th and SW 6th

Points of Interest

N

Speed Profile on SW 6th

Speed Profile for all buses in Downtown: Crosswalks

A

C

B

Delay Visualizations

Urban Corridors

Delay over a segment by Distance

8.512

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Dela

y [s

econ

ds]

Delay per 25ft IntervalBS - SE 79th Int - Powell & 82nd BS - SE 87thBS - SE 82nd BS - SE 84th BS - SE 90th

Cumulative Delay over a segment by Distance

020406080100120140160180

0

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Dela

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Cumulative DelayBS - SE 79th Int - Powell & 82nd BS - SE 87thBS - SE 82nd BS - SE 84th BS - SE 90th

Delay over a segment by Time of Day

020406080

100120140160180200220

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0 1

Dela

y [s

ec]

Time [HH]

Bus Delay from Freeflow Traffic Speed from 90th to 79th

Actual Delay 30 mph 25 mph 20 mph 15mph 10mph

Some Potential Applications

• Buses as probes for traffic conditions• Applications to PMs along urban arterials, collector streets

and freeway sections (wherever there are buses running on regular routes)

• Complement Bluetooth, cell phone, and stationary sensor collection systems

• Compare before and after conditions (e.g. changes in roadway design or signal timing, additional crosswalks)

Acknowledgements

NITC for funding this Research

Steve Callas and Miles Crumley of TriMet for providing the data and definitions used in analysis

Dennis Mitchel of ODOT for providing feedback and suggestions for potential applications

And to the researchers who lay the groundwork for this analysis.

Thank you for listening.

Any Questions?