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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Evansville, Indiana Takes a DIY Approach to Traffic Management (or) How Good Is Great? The City of Evansville Says, "Watch Us and See!"</title>
      <link>https://trid.trb.org/View/1473029</link>
      <description><![CDATA[This article discusses the success the City of Evansville, Indiana in the area of traffic management, including its reduction of commuter delays and of unnecessary traffic stops. Both of these reductions have contributed to a savings of more than 1.5 million gallons of fuel per year. The City began a project to install an Urban Traffic Control System (UTCS) in the late 1970s, which has been followed by the implementation of transportation initiatives to help commuters through the decades. The author describes the City's efforts to upgrade the UTCS system when it became outdated and the role that innovative thinking has played in ensuring successful transportation engineering practices.]]></description>
      <pubDate>Tue, 29 Aug 2017 10:09:13 GMT</pubDate>
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      <title>Flooded Road LED Warning Systems</title>
      <link>https://trid.trb.org/View/1460756</link>
      <description><![CDATA[A Flooded Road LED Warning System (FRWS) uses LED signage or beacons to alert motorists who are approaching water-covered roads. It is a dynamic system with sensors that can detect the rising of water to unsafe levels, which then triggers the alerting signals. This article discusses the use of such a system to promote traffic safety in areas that may flood due to heavy rains, tropical storms, tidal events, tsunamis, or other weather conditions.]]></description>
      <pubDate>Thu, 25 May 2017 14:02:03 GMT</pubDate>
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      <title>Did You Know? The Manual on Uniform Traffic Control Devices (MUTCD) in Its 81st Year</title>
      <link>https://trid.trb.org/View/1440304</link>
      <description><![CDATA[The Manual on Uniform Traffic Control Devices (MUTCD), which serves as the standard for traffic control devices on all public streets, highways and bike trails across the United States and Puerto Rico, enters its 81st year in 2016. This article provides readers with information on the MUTCD's historical timelines; how to download, print and purchase copies of the MUTCD; websites for searching the MUTCD; and definitions of "Open to Public Travel" and "Interim Approval."]]></description>
      <pubDate>Tue, 31 Jan 2017 09:29:32 GMT</pubDate>
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      <title>Wireless in a World of Connectivity</title>
      <link>https://trid.trb.org/View/1422885</link>
      <description><![CDATA[This article discusses the use of wireless communications to complete the traffic network in Portland, Oregon. It highlights the benefits and limitations associated with broadband wireless and describes activities in other cities whose Traffic Operations Centers have taken on wireless communication as a method to improve traffic management.]]></description>
      <pubDate>Mon, 26 Sep 2016 17:14:08 GMT</pubDate>
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      <title>Let's Talk LED Enhanced Signs...It Is a Sign, It Blinks or Flashes and It May Be Intelligent</title>
      <link>https://trid.trb.org/View/1422886</link>
      <description><![CDATA[LED enhanced signs deliver messages that make roads safer and are governed by The Manual on Uniform Traffic Control Devices (MUTCD) , which provides requirements for sign retroreflectivity and sign illumination.  In this article, the author discusses the use of  LED enhanced signs, highlighting LED enhanced stop signs; midblock crossings and roundabout signs; rectangular rapid flash beacons LED crosswalk warning systems; Do Not Enter and wrong way LED enhanced signs; and Curve Warning Systems.]]></description>
      <pubDate>Mon, 26 Sep 2016 17:14:04 GMT</pubDate>
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      <title>Tweaking Signalized Intersections: Two Case Studies</title>
      <link>https://trid.trb.org/View/1419940</link>
      <description><![CDATA[In this article, the author details key factors that traffic engineers must consider in order to improve advanced traffic signal controllers. The article presents two case studies of signalized intersections to demonstrate creative traffic engineering solutions.]]></description>
      <pubDate>Tue, 30 Aug 2016 09:03:27 GMT</pubDate>
      <guid>https://trid.trb.org/View/1419940</guid>
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      <title>Street Name Signs 101: Retroreflective Street Name Signs</title>
      <link>https://trid.trb.org/View/1404126</link>
      <description><![CDATA[In a revision of a previous article, the author discusses the Manual on Uniform Traffic Control Devices (MUTCD) guidelines for the development of retroreflective street signs, with a focus on signs' color, material type, lettering/font and logos. The article also examines the use of internally-illuminated LED street name signs and offers benefits and advantages to using these types of street name signs.]]></description>
      <pubDate>Mon, 27 Jun 2016 15:02:58 GMT</pubDate>
      <guid>https://trid.trb.org/View/1404126</guid>
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      <title>Work Zones As Planned Traffic Incident Management Areas</title>
      <link>https://trid.trb.org/View/1404052</link>
      <description><![CDATA[This article explores challenges associated with traffic incident management (TIM) within highway work zones. Highlighted are issues related to the safety of drivers, construction crew and incident responders and matters of traffic congestion and traffic control. The author describes the tools comprising a traffic manager's operations toolkit designed to reduce congestion and improve safety. She also discusses important components of TIM, including the identification of appropriate roles and responsibilities of construction personnel and the effective sharing of information between potentially impacted parties.]]></description>
      <pubDate>Mon, 23 May 2016 09:49:28 GMT</pubDate>
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      <title>Railroad Preemption Interconnect Circuits: How to Improve Operations and Safety</title>
      <link>https://trid.trb.org/View/1385828</link>
      <description><![CDATA[Preemption interconnected circuitry allows traffic signals and railroad warning systems to communicate to preempt normal traffic signal operations. This allows vehicles to clear the tracks safely. Railroad collisions continue to rise at highway-rail grade crossings where preemption interconnected signals are in place. This article describes various types of circuits, their methods of operation and their design techniques.]]></description>
      <pubDate>Fri, 22 Apr 2016 10:47:13 GMT</pubDate>
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      <title>Managing Traffic from an Emergency Operations Center</title>
      <link>https://trid.trb.org/View/1375107</link>
      <description><![CDATA[In May 2014, San Diego County (California) faced a series of wildfires, the most destructive of which engulfed the City of Carlsbad and forced the evacuation of over 22,000 homes and businesses. This article shares recommendations for emergency planning and managing traffic during a disaster, learned from the successes of the City of Carlsbad. The author highlights things to consider when starting traffic management center (TMC) operations from an emergency operations center (EMC); strategies for getting the public out of harm's way; and things to consider when adjusting to the unknown.]]></description>
      <pubDate>Tue, 24 Nov 2015 09:29:40 GMT</pubDate>
      <guid>https://trid.trb.org/View/1375107</guid>
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      <title>Work Zone Awareness: Toward Zero Deaths</title>
      <link>https://trid.trb.org/View/1366348</link>
      <description><![CDATA[The Toward Zero Deaths (TZD): The National Strategy on Highway Safety initiative aims to increase the public's awareness of the need for greater caution and care while driving through work zones to reduce fatalities and injuries. National Work Zone Awareness Weeks have offered an opportunity to focus on these efforts, and this article highlights Michigan's Work Zone Awareness Week Committee. While many TZD countermeasures will take years to implement, the number of work zone fatalities has dropped significantly since the start of the national campaign.]]></description>
      <pubDate>Fri, 25 Sep 2015 16:30:56 GMT</pubDate>
      <guid>https://trid.trb.org/View/1366348</guid>
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      <title>Traffic Signs on Private Property</title>
      <link>https://trid.trb.org/View/1366345</link>
      <description><![CDATA[This article examines the guidelines for posting traffic signs on private roads that are open to the public. The primary guidelines are set forth in the Manual on Uniform Traffic Control Devices (MUTCD), the national standard for all traffic control devices installed on any street, highway or bicycle trail open to public travel. In addition to this manual, the article also discusses two other traffic sign reference guides: the 2004 Standard Highway Signs Manual and an AASHTO publication listing various related resources. A number of questions related to highway signs on private property and their answers from MUTCD are presented.]]></description>
      <pubDate>Fri, 25 Sep 2015 16:30:53 GMT</pubDate>
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      <title>Sam Houston Tollway from US 290 to IH 45, Houston, TX</title>
      <link>https://trid.trb.org/View/1366346</link>
      <description><![CDATA[This article reports on a project in Houston, Texas involving the construction of overhead sign bridges, canitlevers, large ground mounted signs, small signs and pavement markings on Sam Houston Tollway. The project is one of many design-build initiatives taking place across the state to meet growing transportation needs. The author offers the background for the project and describes its execution and challenges.]]></description>
      <pubDate>Fri, 25 Sep 2015 16:30:44 GMT</pubDate>
      <guid>https://trid.trb.org/View/1366346</guid>
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      <title>Retroreflectivity and Sign Inventory</title>
      <link>https://trid.trb.org/View/1359714</link>
      <description><![CDATA[In this article, the author discusses assessment and management methods aimed at maintaining the minimum required levels for regulatory and warning sign retroreflectivity. Assessment methods include visual nighttime inspection and measured sign retroreflectivity, while management methods include replacement based on sign life and blanket replacement of signs.]]></description>
      <pubDate>Tue, 28 Jul 2015 15:52:00 GMT</pubDate>
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      <title>Monitoring Remote Intersections for Safety and Functionality</title>
      <link>https://trid.trb.org/View/1359716</link>
      <description><![CDATA[30-40% of signalized intersections in the US are located in remote or rural areas and are not connected to a central system, making it challenging to both service non-working signals and to monitor intersections for safety. This article details two options for monitoring signalized intersections in remote and rural areas: closed loop systems and cloud-based central monitoring and reporting systems.]]></description>
      <pubDate>Tue, 28 Jul 2015 15:51:50 GMT</pubDate>
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