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Budget Year / Version:  
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Description

This project provides for the modernization of the County's aged traffic signal system. Phase I consisted of planning, requirements development, systems engineering, and testing. Phase II consists of acquisition of central system hardware and software, acquisition, and implementation of control equipment and communications for intersections, as well as reconfiguration of the communications cable plant. Phase II implementation commenced in FY09. As a result of the November 2009 failure of the existing system, Phase II was refined into two sub-phases, A and B, so that replacement of the existing system could be accelerated. Phase IIA encompassed critical work that was necessary to deactivate the existing system. Phase IIB includes all other work that is not critical to replacement of the existing system.
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Phase

Ongoing

Status

Active
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Budget Snapshot
$48.94M Total
Expenditures/Funding
$7.43M 6 Year Total
Expenditures/Funding
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Estimated Schedule

Phase I - completed FY07-08; Phase IIA - completed FY12; Phase IIB - FY13-16; ongoing Life Cycle Upgrades - FY17 and beyond.
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Cost Change

Cost increase due to the addition of FY25 and FY26 to this ongoing level-of-effort project.
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Justification

The existing traffic signal control system, though it has been highly reliable, is an aging system dependent on dated technology. Central and field communications devices are obsolete and problematic to maintain. As the technologies employed in the Advanced Transportation Management System (ATMS) have advanced, it has become increasingly difficult to interface with the existing traffic signal control system (COMTRAC). Because of the limited functionality of COMTRAC, the system is not able to take advantage of the capabilities of the current generation of local intersection controllers. These capabilities provide a greater level of flexibility to manage traffic demands. In November 2009, the existing traffic signal system experienced a failure that caused significant congestion and delays throughout the County for nearly two days. This event led to an acceleration of the schedule to replace the existing system. The following reports were developed as part of the research, planning, and system engineering work on this project. These reports documented the existing condition and need to modernize the existing signal control system, as well as the evaluation and engineering of specific components of the replacement system: White paper on the Status and Future of the Traffic Control System in Montgomery County, March 2001; Concept of Operations (rev 1.4), October 2007; TSSM Requirements (rev g), October 2007; TSSM Communications Master Plan (rev c), February 2009; TSSM Risk Assessment and Analysis (rev e), April 2009. Given the effort to modernize the signal system and its infrastructure, it is important and prudent to take steps to prevent the system from becoming outdated. A proactive program to replace equipment by its "life cycle" usefulness is required given the dependency on technology driven devices and software to maintain traffic control capabilities and full redundancy fail-over systems. This project was designated a level-of-effort (LOE) in FY17.
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Disclosures

Expenditures will continue indefinitely. The County Executive asserts that this project conforms to the requirement of relevant local plans, as required by the Maryland Economic Growth, Resource Protection and Planning Act.
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Coordination

Advanced Transportation Management System, Fibernet, State Transportation Participation, Traffic Signals Project, Department of Technology Services, and Maryland State Highway Administration.
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Budget Snapshot
$48.94M Total
Expenditures/Funding
$7.43M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP500704
Date Last Modified05/07/20
Administering AgencyTransportation
CategoryTransportation
SubCategoryTraffic Improvements
Planning AreaCountywide
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Total Expenditures by Cost Element (000s)
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Total Funding by Source (000s)
EXPENDITURES (000s)
Cost ElementsTotalThru FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Planning, Design and Supervision1796816768012002002002002002002000
Land00000000000
Site Improvements and Utilities2908821091176962281038103810381038103810380
Construction919919000000000
Other96755840900000000
Total Expenditures4894239336217874281238123812381238123812380
FUNDING (000s)
Funding SourceTotalThru FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Contributions295295000000000
Current Revenue: General10438832217874281238123812381238123812380
G.O. Bonds1549415494000000000
Recordation Tax Premium (MCG)1071510715000000000
State Aid1200012000000000000
Total Funding Sources4894239336217874281238123812381238123812380
OPERATING BUDGET IMPACT ($000s)
Impact TypeTotal 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26
Maintenance53357101315
Program-Staff6005050100100150150
Program-Other36336699
NET IMPACT6895658113116172174
Full Time Equivalent (FTE) 112233
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 21 Request1238
Year First AppropriationFY07
Appropriation FY 22 Request1238
Last FY's Cost Estimate46466
Cumulative Appropriation41514
Expenditure / Encumbrances40270
Unencumbered Balance1244