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Awesome view of the Department's work order system in slides 8, 9, and 10.
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1
Chicago Traffic Signals Database
Presented by:
Abraham EmmanuelTraffic Management Authority –
Office of Emergency Management and Communication (OEMC)
City of Chicago
2
Overview
26,000 intersections (Approximately) 2,800 + signals 24 Interconnects (480 signals) Three agencies
Chicago Department of Transportation Bureau of Electricity Office of Emergency Management – Traffic Management Authority.
Few Signals maintained by IDOT
3
Overview (Cont)
Some form of electronic data repository existed since 1996.
Not up-to-date since 2003 New system developed in 2006 based on the
legacy data.
4
Challenge
No one to one mapping between signals and intersections.
Signal A
Signal B Signal C Signal A
5
Separated Signal from the Geography (intersection)
Signal 1
Signal 1A
Signal 1B
Signal 1C
Intersection X
Intersection Y
Intersection Z
Signal 2
Signal 2A Intersection W
6
Chicago Intersections
Linked Signals to City Intersections using Lat/Log
Chicago Intersections
7
City of Chicago Signalized Intersections
End Product
8
What data is collected?
9
A Lot of Information…
10
Timing & Timing Plans…
11
Links to Video & Still Images…
12
Cable & Foundation Plans…
13
Intersection Details…Maps & Aerial Images…
14
…And Can Track Work Order.
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Technology
Microsoft Access front-end interface
Oracle Express Back End
ArcView GIS for mapping
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Future Plans
Migrate to an Oracle 10g database.Develop HTML/JAVA front-end for data sharing across departments.Link with…
•The Traffic Crash database• ADT database• Surveillance Cameras
Provide up-to-date signal status information to citizens through the City of Chicago website.
17
Once completed the system should facilitate comprehensive traffic analysis
Top Crash Intersections without a traffic signal
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Questions?
Chicago Signal Interconnect
19
Contact Information..
Traffic Management Authority - Office of Emergency Management & Communication
120 N Racine, Suite 200
Chicago, IL 60607
David Zavattero
Deputy Director
(312) 743-7372
Abraham Emmanuel
Principal Systems Programmer
(312) 743-7381
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