This document summarizes the traffic management projects and upgrades implemented by the City of Norwalk between 2006-2015. It outlines challenges including standardizing equipment, maintaining old communication systems, and evaluating new software. Key upgrades are described such as replacing traffic cabinets and controllers with more advanced models, upgrading detection systems to use video instead of loops, improving emergency preemption and CCTV systems, upgrading the traffic signal communication backbone to fiber optic, and implementing a Traffic Management Center to integrate signals, detection, and cameras. In total, 49 of the city's 83 traffic signals have been upgraded through various phases and projects.

1. : Fred Eshraghi
Traffic Division
NOVEMBER 2015

2. CHALLENGES
 Standardize the traffic equipment including traffic
cabinet, controller, video detection, MMU, BBS, Load
switch, flasher, LED, Push button, Mast arm color and etc.
 Keep the old cupper communication system running
while building the new communication network.
 Evaluate Traffic Central Software available in market and
select one based on City's requirement
 Evaluate Video Detection System available in market and
select a system based on City's requirement
 Evaluate and select CCTV central software

3. TRAFFIC CABINET
 Upgrading the Shelf mounted one door P-44 traffic
cabinet to advance rack mounted ITS double doors
traffic cabinet.
 Upgrading the shelf mounted NEMA TS2 controller to
the state of the art ethernet base 2070 controller
 Upgrading the traditional conflict monitor to the
advance ethernet base MMU ( Malfunction
Management Unit)
 Adding BBS (Battery Back Up System) and external
generator plug for emergency situation

4. Traffic Cabinet
2006 2015

5. VIDEO DETECTION SYSTEM
 Upgrading the detection system from magnetic loop
detectors and microwave detection system to the
advance video detection system.
 Standardized the detection zones for both arterial and
side street and running the intersection fully/semi
actuated during non coordination patterns.
 Installation of DCMS (Data Collection Management
system)including streaming video from each video
detector to TMC (Traffic Management Center)

6. •Detection
•Volumes
• Speeds
• Classification
0
50
100
150
200
250
300
350
Detector 1 Detector 2 Detector 3 Detector 4
7:00 - 8:00
8:00 - 9:00
9:00 - 10:00
Vehicle Detection System
DCMS

7. EMERGENCY VEHICLE PRE-EMPTION SYSTEM
 Upgrading the standard pre-emption system to advance
manageable CMS (Central Management Software)
 Upgrading the outdated pre-emption phase selector
with analog communication port to advance pre-
emption phase selector with ethernet communication
port enabling the system to be managed from TMC.
 Adding the coding system to the City's fire department
fire trucks and all other emergency vehicles.

8. Emergency Vehicle Pre-Emption System
PRE-EMPTION

9. CCTV SYSTEM
 Centralized the CCTV system for Traffic Division ,
Department of Public Works and Police Department.
 Upgrading the traditional analog camera to advance
high definition digital camera.
 Upgrading the analog management software to the
state of the art ITS management CCTV software.

10. CCTV System

11. TRAFFIC SIGNAL COMMUNICATION SYSTEM
 Upgrading the backbone communication from twisted
pair copper and mix mode fiber optic to single mode fiber
optic.
 Upgrading the network system from daisy chain to
advance fiber optic full ring and collapse ring.
 Upgrading the speed up to 10 GB
 Upgrading the network system from modem to IP
Gateway Network base.

12. Traffic Signal Communication System

13. TRAFFIC MANAGEMENT CENTER(TMC )
1. Upgrading the Traffic Signal Close Loop System to “Advance
Traffic Management Software” (ATMS)
(Integration of 49 traffic signals)
2. Installation of advance “Data Collection Management
System” (DCMS) (Integration of 200 video detections)
3. Upgrading the “Analog Management Software” to the
advance “ITS Management Central Software” (CCTV)
(Integration of 30+ Digital Camera)
4. Installation of “Central Management Software” (CMS)
(Integration of 40 intersections)

14. Traffic Management Center
20152006

15. Citywide Traffic Signal and Fiber Optic Communications Upgrade
(2006 –2015)
Implemented Projects:
1. Traffic Signal Upgrade (In-house), East Ave, 9 Intersections
2. Traffic Signal Upgrade, Phase 1, 15 Intersections
3. Traffic Signal Upgrade, Phase II, 5 Intersections
4. Traffic Signal Upgrade, West Ave., 5 Intersections
5. West Ave. Roadway Improvement, 6 Intersections
6. Newtown Ave. Traffic Signal Upgrade, 2 Intersections. (State)
7. Safe Route To School, Bick lane, Road improvement, 1 intersections
8. Traffic Signal Upgrade, Strawberry Hill Ave @ Norden Pl. & Beacon St. (Developer)
9. Traffic Signal Upgrade , Belden Ave. @ Cross St. (Developer)
10. Installation and Integration of DCMS.(200 video detection)
11. Installation and Integration of Cameleon CCTV.(30 HD PTZ camera)
12. Installation and Integration of CMS. (40 intersection)
13. Replacing the old analog communication with the Ethernet (IP based) technology.
Under Design Projects:
1. Traffic Signal Upgrade, Phase III, 10 Intersections
2. In-house Traffic Signal Upgrade, 6 intersections
ITS Project:
1. I-95 Corridor Incident management(Exit 14,15,and 16)

16. Summary:
1. Total Traffic Signal : 139
2. Total Traffic Signal Owned by State: 56
3. Total Traffic Signal Owned by City: 83
4. Total Upgraded Traffic Signal (System): 49
5. Total Traffic Signal To Be Upgraded (System): 19
6. Total Traffic Signal To Be Upgraded (Individual): 15

17. HONORS AND AWARDS
 Runner-up for the Best of ITS America Award (2014) in
the category of Best New Innovative Practice-
Sustainability in Transportation for work on ITS
Strategic Plan Implementation for
"Smart Travel" in City of Norwalk, CT
September 2014
 Winner of the ITS Connecticut Leadership Award (2008)
for the ITS Strategic Plan Implementation for “Smart
Travel” in City of Norwalk, CT
September 2008