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 DOT’s P Probe Da Data J Journey 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 5

INDOT’s Probe Da e Data • 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 6

Da Data V Verification 7

Real-time Data Validation Test segment

Real-time Data Validation INRIX speed 55 50 Delay 45 GPS speed (5 minutes) 40 35 MPH 30 25 20 15 Test segment 10 22:26 22:27 22:28 22:29 22:30 22:31 22:32 22:33 22:34 22:35 22:36 22:37 Actual vehicle time on segment

The Delta Speed Concept Delta Speed: Difference in speed at the endpoint between segments. This is where we need to focus Direction of Travel our attention. High speed to low speed indicates the back of a queue Segment 1 Segment 2 Segment 3 Segments Real Time Data 68 MPH 35 MPH 70 MPH (every minute) -2 mph -33 mph Delta Speed

Web Based Tools • Delta Speed Tool

De Delta S Speed T peed Tool

Incident Detection Application Purdue & INDOT Incident Detection Application New to Old M a g n i t u d e

Slow or stopped traffic Previous back of queue Back of queue, growing Fast moving traffic

Slow or stopped traffic Delta speed is decreasing Previous back of queue Back of queue, growing Fast moving traffic

Back of queue, growing

Incident Detection Application Filter by route and mile marker

Incident Detection Application Filter by current active workzones

Incident Detection Application Filter by State Police patrol boundaries

Officer Using Delta Speed

Traffic Ticker Selections

Greenfield District Heatmap and Crash with Time and Location Property Damage Only Injury Fatal Snow Route

Weekly reports on each work zone

Heat at Maps ps Property Damage Only Injury Fatal Snow Route

Heat Maps: Crash I-65

Ques uestions ns? Edward D. Cox, Indiana DOT 26