Real-World Challenges, Performance Measures Real-World Solutions · 2020-03-16 · Real-World...
Transcript of Real-World Challenges, Performance Measures Real-World Solutions · 2020-03-16 · Real-World...
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PerformanceMeasures
Planning
Real-World Challenges,
Real-World SolutionsUsing big data and information analytics
Enabling Effective Decision Making With Data
Archive
Communications
Operations
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RITISFusion & DSS
RITIS: Fuse Data and Produce Actionable Information in Real Time
(Potentially every data stream that is available)
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RITISFusion & DSS
(Potentially every data stream that is available)
RITIS: Archive and Analyze Data to Support Decision Making
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How Much Transportation Data Flows Through RITIS?
RITIS Today:• Traffic accidents: 120,000 records per day: 0.002 Gb/day
• Traffic detectors: 45,000,000 records per day: 5 Gb/day
• Probe vehicle data: 7,500,000,000 records per day: 550 Gb/day (expected to jump to 8 Trillion)
• CCTV, weather, radio, etc: (no stats kept) records per day: ??? Tb/day
• V2X & Automation data: ?,???,???,???,??? records per day: ??? ?b/day (Starting in 6 months)
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Our Goal is to:
Provide tools to make data• easily accessible, • usable, • understandable, and• allowing for insights discoveryTo domain experts or the general public
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Data ToolsDomain
ExpertiseInsights
Fusion, Statistics,& Integration
Analysis &Visualization
+ + =
The Components of a Great Big Data System
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• Operations• Situational Awareness
• Decision Support
• Information Sharing
• Coordination
• Evacuation Support
• AARs
• Etc.
• Research• Open Data
• Ease of Access
• Planning• Identifying problems
• Prioritizing Projects
• Before & After Studies
• Etc.
• Traveler Information• Blending multi-agency
data
• Public and Private Data
• APIs for 3rd Parties
There Are Many Use Cases for Transportation Visualizations
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Challenge: After Action ReviewsThere’s just been a serious fatal incident on I-70. The incident
took a long time to clear—maybe too long. The Director of Operations is asking you to facilitate an after action review
meeting with the DOT, fire service, police, and others to understand what was done well and what could have been done better. If you find any problems, can you use multiple
AARs from similar incidents to create a case for changing policies related to incident clearance in the state?
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– Occurred on October 29, 2016 at around 4:30 AM
– Located on I-70 West, past Exit 80 - MD 32 Sykesville Rd
– A car hit a deer, then a tractor trailer hit the car, and jack-knifed, resulting in one fatality
– All lanes were closed in the WB direction for over 7 hrs
– It took about 11 hrs to fully clear the incident and reopen all lanes
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I-70 fatality incident
March 9, 2017
› Background…
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I-70 fatality incident
March 9, 2017
› Several RITIS / PDA tools were used to conduct impact
analysis and provide visual content as part of an After
Action Review…
EQT/ Incident Timeline Region Explorer Congestion ScanTrend Map User Delay Cost
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I-70 fatality incident
March 9, 2017
– Used to review responder response times, lane & event clearance times, and Operator notes.
– Timeline graphics are inserted in to AARs
– “Heat Map” is used to see trends in incident activity
› Incident Timeline…EQT
Event Query Tool
EQT analyzes your ATMS event data for insight into event impacts on your roadway system, through auto-created tables, charts and maps.
Timeline displays how an incident is being managed by showing the relationships between responder notifications & arrival times, lane status, traffic queues, clearance times, communication logs, CCTV, and DMS.
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TOC Communications
Notifications & Responders
Lane Status
Overhead Sign Messages
Speed Readings
Integrated Event Management
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TOC Communications
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Notifications & Responders
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Lane Status, Sign Messages, Speeds
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Event Query Tool ◦ Heat Map
Events from MDOT CHART that started between September 1, 2016 and October 31, 2016
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I-70 fatality incident
March 9, 2017
– Used to determine the choke points of traffic during the incident, and future detour points
– Helps improve Quick Clearance practices by honing in on the effects on tertiary roadways
› Region Explorer…
An interactive traffic conditions app that can be used to explore the impacts of bottlenecks and incidents along a road, in real-time, or previous point in time.
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Bottleneck Locations at 12:00 PM on 10.29.2016
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Bottlenecks
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I-70 fatality incident
March 9, 2017
– Used it to determine the significance of the delay over the time of the incident’s duration
– Using it as a case to promote Quick Clearance practices
› Trend Map…
An animated congestion and event conditions map that dynamically displays changes over time.
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Congested Locations at 12:15 PM on 10.29.2016
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I-70 fatality incident
March 9, 2017
– Used to view historical extent of the queue
– Queue graphics are inserted into AARs for emphasis
› Congestion Scan…
Analyze temporal and spatial conditions on one or more stretches for road, selecting from several mobility and reliability performance metrics.
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Comparing Oct. 29th to the prior Saturday
October 22, 2016 October 29, 2016
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I-70 fatality incident
March 9, 2017
– The tool we use more heavily
– Helps put things into dollars and cents, to prove the value of our TSM&O program
– Crucial to our program’s funding is to prove the benefit of Quick Clearance practices
– By analyzing the cost of a long-duration incident, we can better make the case for additional or improved resources
› User Delay Cost…
Combine speed data with volume data to estimate the cost of delay (and other measures) due to congestion.
Example: for this incident, we were able to make the case that the State Police need an adjustment to how it manages it’s tow list ( i.e.; a company should be able to prove that it has the necessary equipment for heavy duty operations)
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What’s the User Delay Cost on the following roads
Assuming an Average Value of time of:$16.79 per hour (Passenger Vehicles)
$86.81 per hour (Commercial Vehicles)
(NOTE: User Delay is calculated any time speeds fall below free-flow)
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User delay on I-70 and nearby arterials
Normal Saturday = $6k - $7k
Oct. 29th Saturday = ~$77k
Worse than Friday the day before!
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Challenge: Effectively Managing Work ZonesHow can I understand how my work zones are performing?
Am I causing more problems than I’m solving? Am I creating safety issues?
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Work Zone Dashboard
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Overview
List
Critical
Map Delay(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Current Work Zone List
(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Individual Work Zone Profile
Map
LANE
Perf. Charts
Delay
Settings
(C) 2015 Michael L. Pack, University of MD CATT Laboratory 29
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Lane Profile Interaction
30Segment Speeds
Live CCTV & DMS
Bottlenecks & Nearby Events
(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Individual Work Zone Profile
31(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Adjusting Parameters
(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Work Zone Alerts
33(C) 2015 Michael L. Pack, University of MD CATT Laboratory
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Problem: Identifying and Prioritizing ProjectsYour agency continues to struggle with its budget. Times are
tough, and you don’t have enough money to fix every problem out there. You need to spend wisely based on real data, not politics. Your decisions are going to be scrutinized. What are
you going to do?
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User Delay Cost at this Location: $50.8M
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Press Releases: Pre-Thanksgiving traffic vs. normal
2PM Wed. Before Thanksgiving 2PM Normal Wednesdays in November
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Problem: Justify your recent investment/projectYou just spent millions removing a bunch of traffic signals on the Garden State Parkway. Was it worth it? Did you improve
things? How can you justify your expenses to the public?
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7 Saturdays in 2013 (before work to remove 3 signals)
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7 Saturdays in 2016 (after removal of signals)
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