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Traffic Signal Optimization Program

Calendar

APRIL 2014
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 27  28  29  30    

Since it's inception in 2004 through 2013, the Traffic Signal Optimization Program (TSOP) has successfully completed eighty-seven (87) projects that involved more than 800 signalized intersections all across the region. The program continues to be highly supported and receives regional funds for programming new projects.  Projects launched through this program provide technical assistance to member agencies for improving traffic signal coordination, optimization and review of operations through simulation modeling. Assistance is provided by consultants hired by MAG through an on-call services contract.

What is signal coordination and optimization? This involves the implementation of the best possible timing settings to govern the operation of a traffic signal. The objective is to respond to the demands of motor vehicles, bicycles, and pedestrians in a safe and optimum manner.  Signal optimization leads to the minimization of stops and delays, fuel consumption and air pollution emissions and maximizing the progression along an arterial.

Why is it necessary to optimize signals?  Traffic signal optimization is one of the most cost-effective ways to improve traffic movement and make our streets safer and efficient.  Signal optimization is performed for any or all of the following reasons:

  • To adjust signal timing to account for changes in traffic patterns due to new developments and traffic growth
  • To reduce motorist frustration and unsafe driving by reducing stops and delay
  • To improve traffic flow through a group of signals, thereby reducing emissions and fuel consumption
  • To postpone the need for costly long-term road capacity improvement by improving traffic flow with existing resources 

Signal optimization projects have been found to produce benefit to cost ratios as high as 40 to 1.
The TSOP has been championed by the MAG Intelligent Transportation Systems Program to provide traffic engineering assistance for refining signal operations across the MAG region. Projects may cost up to $25,000, and would not require a local match.

All of the projects have been completed.

2013 TSOP Projects

Project#

Agency

Budget

Consultant

Project Title

Project Descriptions

1

Gilbert

$13,619.42

ATKINS

Corridor
signal timing

Gather count data to optimize signals on 4 major corridors plus additional intersections.   Before and After study to be conducted by agency staff upon signal optimization. 

2

Glendale

$12,383.03

Stantec

Queue delay study

Gather count data required by agency.  Perform queue delay study upon signal optimization by agency staff.

3

Maricopa County

$21,436.98

Ayres

Intersection
signal timing

Gather traffic data and develop signal timing for 6 intersections for 4 time periods.  

4

Maricopa County

$3,935.13

Stantec

Before and After Study for #3

Perform a Before & After travel time study. Before data were gathered. After data and evaluation will be completed by the County. 

5

Mesa & Gilbert

$34,981.97

YSMA

Signal timing at interchanges

Gather traffic data at 8 freeway interchanges and 22 intersections. Signal timing done by agency staff. Before and After study of travel times and queue delays, .

6

Peoria

$10,303.32

Jacobs

Comparison of optimized signal timing with InSync system

Traffic counts and weekday timing plans for 4 intersections along Bell Road. Evaluate the performance of optimized timing in comparison to the InSync adaptive traffic control system. 

7

Phoenix & ADOT

$53,523.47

Lee

Integrated Corridor Management

Evaluate timing Strategies, available alternative routes, lane configurations

8

Phoenix & ADOT

$22,463.28

KHA

Integrated Corridor Management

Develop Concept of Operations and draft IGA

9

Tempe

$23,518.97

Michael Baker

Corridor
signal timing

Develop the SYNCHRO model, gather field data & develop optimized signal timing for 16 intersections along McClintock Road from Curry to Watson

10

Tempe

$5,122.44

CK

Before and After Study for #9

Perform a Before & After travel time study.  Before data were collected. After data and comparison will be completed by the City. 

TOTALS

10

8

$201,288.01

9

 

 

2012-2013 TSOP Projects

2011-2013 TSOP Projects

2010 TSOP Projects

2009-2010 TSOP Projects

2007-2008 TSOP Projects

2003-2004 TSOP Projects

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Project Contacts

ITS and Safety Program Manager:
Sarath Joshua
Transportation