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Back ck of queue, queue, m many option
- ns available today
ay
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Back of queue detection Edward D. Cox, Indiana DOT 1 Back ck of - - PowerPoint PPT Presentation
Back of queue detection Edward D. Cox, Indiana DOT 1 Back ck of - - PowerPoint PPT Presentation
Back of queue detection Edward D. Cox, Indiana DOT 1 Back ck of queue, queue, m many option ons available today ay 2 Smar mart w work zone t technology 3 Probe Data choices Dashboards & Services VS. Real Time Data Feed 4 INDO
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Smar mart w work zone t technology
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Real Time Data Feed
Probe Data choices
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Dashboards & Services VS.
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INDO DOT’s P Probe Da Data J Journey
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- First purchased in 2011 due to major interstate closure.
- Evaluated multiple vendor data sets
- Verified data quality
- Built our own tools
- Increased saturation
- Improved segmentation of roadways
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INDOT’s Probe Da e Data
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- interstate segments per minute = 6,659
- non-interstate segments per minute = 34,829
- records per day = 59,742,720
- records per week = 418,199,040
- records per year = 21,806,092,800
- storage per year = 3.63 TB
- segment update every six months
- We lose less than 1 minute of data per day on any
segment
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Da Data V Verification
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Real-time Data Validation
Test segment
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Real-time Data Validation
10 15 20 25 30 35 40 45 50 55
22:26 22:27 22:28 22:29 22:30 22:31 22:32 22:33 22:34 22:35 22:36 22:37
MPH
Test segment GPS speed Actual vehicle time
- n segment
Delay (5 minutes) INRIX speed
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Delta Speed: Difference in speed at the endpoint between segments.
Direction of Travel Segment 1 Segment 2 Segment 3 Real Time Data (every minute) Segments Delta Speed 70 MPH
- 2 mph
68 MPH 35 MPH
The Delta Speed Concept
- 33 mph
This is where we need to focus
- ur attention.
High speed to low speed indicates the back of a queue
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- Delta Speed Tool
Web Based Tools
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De Delta S Speed T peed Tool
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Incident Detection Application
Purdue & INDOT Incident Detection Application
New to Old
M a g n i t u d e
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Slow or stopped traffic Fast moving traffic Back of queue, growing Previous back of queue
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Slow or stopped traffic Fast moving traffic Back of queue, growing Previous back of queue Delta speed is decreasing
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Back of queue, growing
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Incident Detection Application
Filter by route and mile marker
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Incident Detection Application
Filter by current active workzones
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Incident Detection Application
Filter by State Police patrol boundaries
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Officer Using Delta Speed
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Traffic Ticker Selections
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Greenfield District Heatmap and Crash with Time and Location
Property Damage Only Injury Fatal Snow Route
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Weekly reports on each work zone
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Heat at Maps ps
Property Damage Only Injury Fatal Snow Route
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Heat Maps: Crash I-65
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Ques uestions ns?
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