Since it's inception in 2004 the Traffic Signal Optimization Program (TSOP) has successfully completed twenty two projects that involved more than 200 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.
2012-2013 TSOP Projects
|Task Order||Agency||Task Budget||Consultant||Project Title||Project Descriptions|
|TS12-1||MAG||$9,982.21||Ayres||Regional Synchro Training||Regional SYNCHRO software training workshop|
|TS12-2||Scottsdale & ADOT||$59,476.16||LEE Engineering||Frank Lloyd Wright Blvd/Loop 101 Corridor Timing Development||Optimize signal timings of 9 intersections along Frank Lloyd Wright Blvd from Scottsdale Road to Thompson Peak Parkway for 4 weekday timing plans, 3 weekend timing plans and 3 special event timing plans.|
|TS12-3||Scottsdale & ADOT||$13,815.58||Kimley-Horn and Associates||Frank Lloyd Wright Blvd/Loop 101 Corridor B&A Study||Before and After Travel Time Studies to evaluate timing adjustment|
|TS12-4||Gilbert||$15,875.84||ATKINS||SAN TAN VILLAGE Traffic Signal Re-Timing Data Collection||Collection Turning Movement data at 30 intersections around the SAN TAN Village for 3 weekday time periods. The data will be used for signal optimization by city staff. |
|TS12-5||Gilbert||$8,999.77||Jacobs||SAN TAN VILLAGE Traffic Signal Re-Timing B&A Study||Before and After Travel Time Studies to evaluate timing adjustment|
|TS12-6||Chandler||$13,634.31||Jacobs||Chandler North Central Area Signal Re-timing Data Collection||Collection Turning Movement vehicle data and pedestrian counts at 38 intersections in the North Central area for 3 weekday time periods. The data will be used for signal optimization by city staff. |
|TS12-7||Chandler||$11,434.31||Stantec||Chandler North Central Area Signal Re-timing B&A Study||Before and After Travel Time Studies to evaluate timing adjustment|
|TS12-8||Peoria||$14,994.70||Michael Baker||Lake Pleasant Parkway signal Timing Optimization||Optimize signal timings of 11 intersections along Lake Pleasant Parkway from Happy Valley Parkway through Beardsley Road for 1 weekend period.|
|TS12-10||Phoenix||$24,964.24||Ayres||South Phoenix Core SYNCHRO Model & Broadway Road Signal Coordination||Develop SYNCHRO model for Baseline, Southern, Dobbinis, South Mountain and Broadway from the east city limit to west city limit. Optimize timings along Broadway road for 4 weekday periods and 1 weekend period. |
|TS12-11||Phoenix||$3,968.99||ATKINS||Broadway Road Signal Coordination B&A Study||Before and After Travel Time Studies to evaluate timing adjustment|
|TS12-12||Tempe||$22,321.99||Kimley-Horn and Associates||Tempe North Priest Drive Traffic signal Optimization||Optimize signal timings along Priest Drive from Baseline to Center Parkway for 3 week day periods.|
|TS12-13||Tempe||$5,100.00||CK Group||Tempe North Priest Drive Traffic signal Optimization B&A Study||Before and After Travel Time Studies to evaluate timing adjustment|
|TS12-14||Maricopa County||$25,021.55||YSMA||Anthem signal Timing Optimization||Optimize signal timings along three corridors: Anthem Way, Daisy Mountain and Gavilan Peak Parkway for 4 weeday time periods and 3 weekend time periods.|
2011-2012 TSOP Projects
|Task Order||Agency||Task Budget||Consultant||Project Title||Project Descriptions|
|TS11-1||MAG||$9,996.80||Ayres||Regional Synchro Training||Regional SYNCHRO software training workshop|
|TS11-2||Chandler||$24,920.86||Ayres||Chandler North-South Arterial Signal Re-timing||Collection of Turning Movement Counts at 50 intersections for AM, Midday and PM (2 hours each) - city staff will develop new signal timing based on the data|
|TS11-3||Gilbert||$25,000.00||Michael Baker||Gilbert Nothwest Zone Signal Re-timing Data Collection||Collection of Turning Movement Counts at 51 intersections for AM, Midday and PM (2 hours each) - city staff will develop new signal timing based on the data|
|TS11-4||Surprise, Maricopa County, Peoria, ADOT, Glendale, Phoenix||$87,601.13||Lee Engineering||Bell Road Weekend Traffic Signal Timing Plans Development||Saturday AM, PM, mid-day and Sunday all day timing plans for Bell Road, 37 intersections across 5 jurisdictions, approximately 13 miles.|
|TS11-5||Mesa||$24,904.81||AMEC||Mesa Data Collection for Traffic Signal Re-timing||Approach counts at 96 locations - city staff will develop the signal timing based on the data|
|TS11-6||Scottsdale, ADOT, SRPMIC||$27,335.05||Stantec||Signal Phasing and Timing for Loop 101 Interchanges||Optimization of 8 freeway-arterial interchanges along Loop 101 Pima Freeway|
|TS11-7||Tempe||$24,992.54||YSMA||University Drive Signal Re-timing||Update signal timing along University Drive for AM, PM and off-peak|
|TS11-8||Tempe||$25,970.73||YSMA||Tempe City Wide SYNCHRO Network Update||Update citywide SYNCHRO network and input existing data|
|TS11-9||Avondale||$33,323.65||Lee Engineering||Avondale Retiming and Implementation||Retime and Implement signal timing along Dysart Road|
|TS11-10||Glendale, ADOT||$29,048.72||Jacobs||Glendale Data Collection for Special Events||Collection of Turning Movement Counts at 24 intersections around the Glendale sports facilities on a typical day and different event days - city staff will develop new signal timing based on the data|
|TS11-11||Glendale, ADOT, Peoria||$6,135.22||Jacobs||Glendale Data Collection for 75th Avenue and Union Hills Drive||Turning Movement Counts collection at 9 intersections along 75th Avenue and Union Hills Drive - city staff will develop new signal timing based on the data|
|TS11-12||Goodyear||$24,809.74||Atkins||Goodyear Data Collection for City Intersections||Turning Movement Counts collection at 63 intersections for AM, Midday and PM - city staff will develop new signal timing based on the data|
|TS11-13||Phoenix||$18,486.58||Kimley Horn and Associates||Phoenix West Core SYNCHRO Model Development||Develop the SYNCHRO Model for Phoenix West Core and input existing timing and Turning Movement Counts |
|TS11-14||Phoenix||$24,876.23||Kimley Horn and Associates||Signal Re-timing at McDowell and Van Buren||Develop signal timing for McDowell Rd and Van Buren St; Evaluate the impact of pedestrian requirements in the 2009 MUTCD|
|TS11-15||Phoenix||$28,123.49||Kimley Horn and Associates||North Centrol Core SYNCHRO Model Development||Develop SYNCHRO model for Phoenix North Central Core and input existing timing and Turning Movement Counts |
|TS11-16||Surprise||$23,504.27||CK Group||Special Event timing||Optimization of 8 intersections along Bell, Greenway and Litchfield Roads|
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