1. Siemens – Local Controller Software with Adaptive Control
Effective traffic control solutions

2. SEPAC 3.52/4.52 Controller Software
New Feature
Performance Measurements
SPaT
Priority Control
USB Support 2

3. SEPAC® 3.52/4.52 Performance Measurement
SEPAC Performance Logging is designed to capture internal and external controller events on a 1/10th second basis. It provides the logging abilities required by the Indiana Dept. of Transportation (InDOT). 3

4. SEPAC® 3.52/4.52 SPaT Messaging
SPaT – Signal Phase and Timing
Data Messaging
Sends a UDP packet to the configured Destination address every tenth of a second
Each UDP packet shall include:
The minimum time before the phase will change to a different interval
The maximum time before the phase will change to a different interval
Current red, yellow or green status of each vehicle phase, pedestrian phase, and overlap
Intersection Status
Plan Number for TBC
System Time 4

5. SEPAC® 3.52/4.52 Priority Control
Buses and light rail trains need to stay on schedule to make public transportation an attractive alternative to other means of transportation.
At the same time, keeping individual traffic flowing to avoid congestion, which causes a negative impact on the environment, is equally important.
Giving high priority to public transportation without interrupting the general traffic flow has been a major challenge for conventional traffic control software in the past. 5

6. SEPAC® 3.51 Enhances Performance of Traffic Signal Control
The latest version of the proven SEPAC traffic control software is focused on enhancing performance of traffic signal control for customers who use Light Rail Transit, Bus Rapid Transit and regular Traffic Signal Priority functionality.
A new set of features improves the use of partial and full priority, with minimal impact on pedestrian and vehicle traffic.
With more than 25 years of developing and testing, SEPAC is an unparalleled traffic signal priority software that enables mobility, safety and a better environment to help improve the quality of life in cities. 6

7. Increased Functionality to Meet Your Demanding Transportation Needs
4 phase banks
Advance warning flashers
Flashing left arrow with delay
Red protect collision avoidance
Bicycle detection and timing
Advanced pedestrian functionality 7

8. Features Phases Coordination Detection/Inputs 16 vehicle phases
8 pedestrian phases
4 phase banks
4 timing rings
15 alternate sequences
16 overlaps
6 modes of coordination
Locally based traffic responsive routines
250 events
5 modes for transition
3 auxiliary and 8 special functions
99 day and 10 week programs
Free / flash / dimming
16 phase function maps
64 vehicle detectors*
8 pedestrian detectors*
8 system detectors*
Ethernet detection interface for Sensys Ethernet Access Points (optional)
*80 total detectors defaulted to listed configuration but can be programmed as different types, if necessary.

9. Modes of Operation
SEPAC’s traffic capabilities include five modes of operation that allow for Time of Day (TOD) operations, week plans, time of year or holiday plans, which include: coordination, free and flash functions. Modes include:
Standalone – All functionality is operational as a standalone unit. Time updates available through GPS syncs. Controller can be programmed to use the GPS output for keeping its internal TOD clock accurate. 1
Master Control – In conjunction with a Marc Master Controller, SEPAC will work within a closed loop system. 2
System Control – SEPAC has the ability to communicate to TACTICS® and operate under system control. 3
Manual – SEPAC can be controlled manually to run specific coordination routines when set to manual, including free operation. 4
Adaptive Control – SEPAC can accept commands from SCOOT® for adaptive control, if available. 5 9

10. Compatible with Siemens Controllers
Designed for Siemens “M” series and Caltrans 2070 style controllers as well as ATC (Linux based) controllers 10

11. Siemens Adaptive Control
Effective traffic control solutions

12. Current Traffic Landscape
Annual delay per traveler increasing at a rapid pace
Freeway usage is reaching peak capacity and spilling out onto arterials 12

13. Congestion Impacts All of Our Lives
80 billion tons of air pollution
170 billion gallons of excess gas
Effects 33% of all accidents
Possible delete
© Siemens AG 2011 13

14. How Does Adaptive Control Work?
Real time data collected 1
Information input is placed into algorithms 2
Special tuning, weighting and logic is factored 3
New timings are developed 4
Make a simple Block Diagram like Slide 38 14

15. Optimizing Signals Gives Added Benefit in Reducing Stops, Delays and Fuel Usage
Achieves significant reductions in vehicle delay (21%), stops (25%), and fuel consumption (5%)
35% reduction in delays on a section of State Highway 6 in Houston, Texas
$787,000 in benefits to the public for one year of operation in Bradenton, Florida 15

16. Siemens has two proven Adaptive Control systems to fit the unique needs of your city: ACS Lite and SCOOT® 16

17. ACS Lite
Adaptive Signal Coordination Software 17

18. ACS Lite Overview
Adapts and optimizes the splits and offsets of signal control patterns/plans along an arterial application
Resulting in reduced delay, stops and fuel consumption
Has flexibility to be deployed as an on-street master or as a centralized system

19. Goals of ACS Lite
Siemens developed ACS Lite under contract to the Federal Highway Administration as a more accessible way to implement adaptive control
Low Cost Design – make it easy
Leverage existing infrastructure
Standard US-style actuated controllers and logic (rings, phases, splits, barriers, gap-out/extension, etc.)
Typical agency detector layouts
Typical communications
Use NTCIP
Promote efficiency

20. What Parameters Does it Adjust?
Controllers use normal timing plans
ACS Lite changes splits and offsets based on traffic demands
Cycle length is changed by time-of-day (TOD)
Actuated logic and sequences are used
Still use TOD changes 20

21. Findings
An ACS Lite system can help to effectively reduce travel time on main street and queue length on side streets during peak periods, which in turn improves system efficiency, reduces emission and fuel consumption.
Up to 32% reduction in travel time on newly time signals
Comparing peak time traffic parameters before and after the study, we observed,
No significant difference in traffic volume
Significant travel time reduction
Significant side street queue length reduction
Average of 20% reduction in side street queues 21 21

22. Ann Arundel County, Maryland Use Case
Annapolis, Maryland area experienced significant traffic changes
Implementation
12 Intersections on Riva Road
Project Costs: $141,000
Results
Test showed 82% improvement in afternoon peek travel times
Overall delays reduced by 26%
Expanding system to other corridors
From “The Capital” Newspaper article 8/17/2011

23. Use Case A Unique System for Tyler, Texas
Growing traffic delays are ranked as
the #1 concern in Tyler, similar to
many other towns in the U.S.
Signal timing plans do not get updated frequently enough
Corridor traffic flows smoothly at peak times, but there are unpredictable off-peak periods due to commercial nature of corridor
Traditional timing plans are weak
Offsets change during traffic or weather events 23

24. SCOOT® Performance You Can See…
Adaptive Signal Coordination Software 24

25. SCOOT ® is an Adaptive Control engineering TOOL that can handle virtually any type of application
Shrink down and add Leatherman 25

26. SCOOT® Worldwide Adaptive Control
200 systems worldwide
Toronto
Beijing
London
Dalian
Minneapolis
Santa Barbara
Arlington County
Chengdu
Orange County
Qingdao
Cyprus
Anaheim
Chongqing
Bahrain
Cartagena
Dubai
Sao Paulo
Rework and Update------
The Toronto pilot system of 75 intersections has now expanded to 240 intersection on line with the capability of 500. Toronto has over 1800 signals in its network
Anaheim was a FHWA Field Operational Test to evaluate SCOOT control using existing UTCS detector- usually mid-block. The results showed improvements, in spite of reduced intersection count and construction However, it was not as good if full SCOOT detectors were implemented. Expansion of the system is currently under discussion.
Arlington County is replacing an old UTCS system for its 230 intersection. Approximately 70 intersections will be under SCOOT control. Eagle is the prime contractor for this $2.5M project scheduled to be on line fall of 1999.
Durban
Santiago
Port Elizabeth 26

27. SCOOT® System Architecture
Traffic Control Functions
Time-of-day control
Traffic responsive control
Quick response
User interface to TACTICS and SCOOT
The SCOOT server, via its scheduler, turns SCOOT on and off for the selected intersections. Once the EPAC controller receives the SCOOT commands over its communication channel, it responds. SCOOT control is dropped after 3 seconds of no SCOOT commands.
The ACTRA system provides the normal traffic control functions:
TOD control
Traffic Responsive control
Quick Response
User interface to ACTRA and SCOOT
The SCOOT server, via its scheduler, turns SCOOT on and Off for the selected intersections. Once the EPAC controller `sees’ the SCOOT commands over its comm.. channel, it responds. SCOOT controls is dropped after 3 seconds of no SCOOT commands. 27

28. Orange County, Florida Use Case
Implementation
Phase I – International Drive
Phase II – Added intersections toward Disney World
Phase III – Corridor approaching University of Central Florida
Phase IV – UCF Campus
Uses TACTICS® and SCOOT® in parallel
Benefits
Projected annual savings of $400,000
Convention Center traffic ingress & egress has been cleared efficiently
Overall travel times and delays have been reduced
Officer control of signals is no longer necessary
Regular development and update of timing plans is not necessary
Timing adjustment during long or short term lane closures is not necessary
Real-time traffic data are monitored and archived

29. University of Minnesota Use Case
Implementation
Installed in University Of Minnesota area
39 intersections in grid with extended major corridors
Includes traffic circle
Adding additional intersections in Phase II
Results
Study to be completed soon
General positive results
Siemens added additional detection capability for complex intersection

30. Thank You for Your Attention!
Daniel K. Nelson, P.E. PLM Product Manager Senior Applications Engineer Mobile: +1 (512) Tel.: +1 (512) Siemens Industry, Inc Cameron Rd Austin, TX 78754