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Director of Planning
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City of Sugar Land
2700 Town Center Blvd North
ITS Communications Rehab
Fort Bend County
Approximately 65 signalized intersections within the City limits
The primary concern is in regards to the existing Microwave Wireless Communication System which has reached the end of life and parts are no longer readily available for maintenance. The Wireless system has been the foundation to the City’s ITS and supports everyday traffic operations from the Traffic Management Center. Eventually, the system will be inoperable which will affect the ability to manage signal in real time, data collection (volume, speed etc.), and adaptive systems along major highway/roadways like US90, SH 6, and University Blvd.
The existing microwave wireless equipment at 8 high sites and 65 signalized intersections will be replaced with new 5ghz and 11ghz microwave wireless equipment. There would be many more replacements of the Cisco networking backend equipment and connecting hardware. The system would also be updated to include newer control systems such as cnPilot for management of the microwave system as well as Cisco Prime for management of the network infrastructure supporting the wireless network. The new communication equipment will bring better bandwidth and reliability to a system that is becoming unreliable and not keeping up with ITS communication needs. This would occur for each location that is provided service.
The primary outcome for the project would be to address the failing and unmaintainable high site system. The new system will provide a stable and reliable communications infrastructure to support all city-wide ITS solutions from the Traffic Management Center. This will allow us to provide a better traffic operation service throughout the city, including two major highways (SH6, US 90) and Major freeway interchanges (US 59).
I Don't Know
Less than $100 million
(Manage) ITS Infrastructure
View Uploaded File: Letter of Funding Commitment - P1 - ITS Communications Rehab.pdf
None of the Above
View Uploaded File: Location - P1 ITS Communications Rehab.PNG
View Uploaded File: P1 - ITS Communications Rehab - Project Budget.xlsx
View Uploaded File: P1 - Safety Benefits of 6 roadways.zip
View Uploaded File: P1 - Delay Benefits of 6 roadways.zip
View Uploaded File: P1 - Emission Benefits of 6 roadways.zip
View Uploaded File: Supporting Files - Maps_Growth Rate_Volume Reports_TxDOT Go Ahead.zip
View Uploaded File: BCA Methodology Justification.docx
The methodology to calculate the BCA for Safety, Emissions and Delay was based on the
Templates provided by H-GAC. The input data was obtained by the H-GAC travel demand
model - using yearly growth rate correction when necessary (the detailed explanation can be
found in the Word file, named "BCA Methodology Justification").
For the “After Improvement” average speed the city added 5 miles an hour uniformly to all corridors. The Federal Highway Administration has several publications stating the benefits of traffic management centers, signal optimization, and adaptive systems. They document 10% to 50% improvements depending on different factors. This ITS Communications Rehab projects supports all these forms of traffic management. The city decided to conservatively use 5 mph improvement as a uniform and justified estimated improvements for all roadways with support of this project.
2018 Average Daily Traffic: The 2018 ADT counts supplied in the BCA templates are drawn from the magnetometers placed at all the major intersections throughout the City. The magnetometers are a big part of our ITS system which have shown accuracies of 95-98%. They collect turning movement counts daily, 24 hours a day.
The City chose to report the latest Tuesday (October 23, 2018) to represent the current 2018 average daily traffic of a typical weekday. This same data was used to also verify the peak hours needed for the templates
The results show Benefits of $15,700,000 (Delay); $38,896 (Emissions); and $57,447,000 (Safety),
in 2018 dollars; totalling $73,185,896. The Cost is represented by the amount of federal funds
requested; $1,664,000. Which results in a Benefitt/Cost ratio of 43.92 - meeting the requirement
for BCA > 1.0
0.01 – 0.10
View Uploaded File: P1 - High Site Rehab- LOTTR Estimation.xlsx
The project will support the Traffic Management Center, which is used often when managing traffic incidents that involve traffic accidents on US59, flooding or icing of local roadways. It serves SH6, which is a hurricane evacuation route and will serve 6 DMS signs that are located throughout the City to provide notification to motorists.
The H-GAC Congestion Management Process network includes the US90A, SH6, and US59 - all major roadways impacted by the reliability of the ITS communications.
The City of Sugar Land has developed the ITS website, where the residents can have access to existing or scheduled events, see a screen capture of the traffic condition (from traffic cameras on specific intersections), as well as the status of railway crossings.
There is also an option where the user can subscribe to receive e-mail notifications from events posted on the ITS website (http://its.sugarlandtx.gov/traffic)
We also post accidents that typically close lanes on DMS signs located throughout the City.
Yes, the system is capable of giving priority to emergency vehicles by preempting as the vehicle approaches the traffic signal.
The City also hopes to implement a software based GPS priority system in which the route of emergency vehicles will influence the signal timing, even before the vehicle approaches the intersection, allowing for a clear route for emergency vehicles while minimizing impact/disruption on overall traffic flow. Communications is key to this project.
Even though there is currently no transit circulating within the City limits, the ITS system is capable of providing priority to specific transit vehicles.
View Uploaded File: Life Cycle Maintenance Strategy.docx
The system would remain operational in case of disruption, allowing to remotely change traffic signal timing plan and/or preempt to clear specific approaches.
Houston-Galveston Area Council