Technical Resources

Transportation System Management and Operations Resources

The following is a listing of the most recent publications for this topic.

PUBLICATION TITLE
An Explanation of Mats Järlström's Extended Kinematic Equation
Since the yellow indication was first added to traffic signals in 1920, the proper interval duration has been robustly debated.1 Seemingly, the timing of the yellow indication appears straightforward. However, determining the illumination interval is quite intricate since it is part of a complex system of physical and human-made laws, technology, and human behavior that all must operate compatibly.
Feb 26, 2020
An Extended Yellow Change Interval Solution Derived from GHM's Critical Distance
The critical distance is the foundation to Gazis, Herman and Maradudin's (GHM) universally adopted minimum yellow traffic signal timing solution presented in their 1960 paper, "The Problem of the Amber Signal Light in Traffic Flow" [1]. However, GHM's (permissive [2]) minimum yellow signal duration is limited in its application since they only accounted for vehicles moving at constant velocity traversing a minimum safe and comfortable stopping distance referenced a level intersection's stopping line, aka GHM's critical distance.
Feb 26, 2020
Guidelines for Determining Traffic Signal Change and Clearance Intervals
ITE has concluded a years-long effort to issue guidance on yellow change and red clearance intervals for signalized intersections. The final version of the Recommended Practice Guidelines for Determining Traffic Signal Change and Clearance Intervals (RP-040B) has been adopted by the ITE International Board of Direction and is now available.1
Feb 26, 2020
Press Release: ITE Releases Recommended Practice for Traffic Signal Change and Clearance Intervals
The Institute of Transportation Engineers (ITE) has issued guidance on yellow change and red clearance intervals for signalized intersections. The recommended practice -- Guidelines for Determining Traffic Signal Change and Clearance Intervals -- has been adopted by the ITE International Board of Direction and is now available for purchase.
Feb 26, 2020
Traffic Signal Change and Clearance Intervals: Research Still Needed!
Yellow change and red clearance intervals have been a topic of research for at least the last 60 years. It would be easy to assume that we now know all we need to know about the subject and that the remaining challenge is merely to put what we know into practice. But there is still much about driver behavior at intersections during traffic signal changes that we don't know with certainty or completely understand. During the development of the ITE Guidelines for Determining Traffic Signal Change and Clearance Intervals Recommended Practice, current knowledge, research, and practice in this area was documented, but the following 11 areas of interest were identified where additional study or new research is needed to expand the body of knowledge. Research in these areas would be useful in further refining the concepts and procedures in the ITE Recommended Practice.
Feb 26, 2020
Yellow Change Intervals for Turning Movements Using Basic Kinematic Principles
This discussion will review various models of drivers approaching an intersection in both through and turning lanes and what yellow change interval may be necessary in those situations. It is an extension of the work of Gazis, Herman, and Maradudin's (GHM) in their seminal 1960 paper, "The Problem of the Amber Signal Light in Traffic Flow". GHM proposed the basic protocol used today for setting a minimum yellow change interval for through movements that would provide a motorist with a solvable solution to the stop or go problem encountered when the yellow signal is illuminated.
Feb 26, 2020
Moving Utah's Transportation System into the Future: IntelliMoveUtah
The population of Utah, USA is projected to nearly double by 2050. This projection presents a unique transportation challenge and stresses the need for innovation, collaboration, and long-range planning. In early 2017, the Utah Department of Transportation (UDOT) created a transportation technology engineer position to focus solely on connected vehicles, automated vehicles, and other traffic management technology projects. Building on the success of this role and the projects undertaken, UDOT created an entirely new group, recently renamed the IntelliMoveUtah group, to continue deploying these technologies. UDOT believes that new technologies, including connected and automated vehicles, will help address population growth and leverage this transformation in transportation in safer and more efficient ways.
Sep 1, 2019
Better Perspectives with Big Data in City of Atlanta
Effective Transportation System Management and Operations Using Big Data
Jul 24, 2019
Developments in Signal Performance Measures: Increasing Efficiency & Usability
Effective Transportation System Management and Operations Using Big Data
Jul 24, 2019
FM 1464 ATSPM Pilot Deployment: A Signal Optimization and Maintenance Perspective
Effective Transportation System Management and Operations Using Big Data
Jul 24, 2019
Providing Real-Time Connected Vehicle Data Over the Internet
Effective Transportation System Management and Operations Using Big Data
Jul 24, 2019
National Operations Center of Excellence (NOCoE)
National Operations Center of Excellence (NOCoE)
Aug 7, 2018
Transportation System Management and Operations - Integration of Safety in the Project Development Process and Beyond: A Context Sensitive Approach
Transportation System Management and Operations - Integration of Safety in the Project Development Process and Beyond: A Context Sensitive Approach
Jun 23, 2015
From Research to Implementation: Reliability Products to Improve Systems Management and Operations Part Two of Two
At the ITE 2014 Technical Conference and Exhibit, a three-part session examined the tools emerging from the Reliability focus area of the second Strategic Highway Research Program (SHRP 2). As a continuation of Part One of this article in the June 2014 ITE Journal, this article provides an overview of the product presentations given during the second session, as well as highlights from the discussion session. Recordings of all the presentations are available online through the ITE website at www.ite.org/shrp2.
Jul 1, 2014
From Research to Implementation: Reliability Products to Improve Systems Management and Operations Part One of Two
Highway deaths and injuries. Aging infrastructure. Increasing congestion. Th ese urgent issues prompted the United States Congress to authorize the second Strategic Highway Research Program (SHRP 2) in 2009 to conduct research for the development of products to address them. Administered by the Transportation Research Board of the National Academies under a memorandum of understanding with the U.S. Department of Transportation (USDOT) Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Offi cials (AASHTO), SHRP2 has focused on four research areas: Safety, Renewal, Reliability, and Capacity. Th e goal of SHRP2 is to develop recommended procedures, practices, and applications to advance our nation’s highway system in these focus areas through targeted, short-term, results-oriented research. Currently funded through March 2015, the SHRP2 program is in the fi nal stages of research and development work, with the unveiling of products that could be adopted as standards, guides, or recommended practices at the local, state, or federal level. Current eff orts are now focusing on implementation, with FHWA and AASHTO working in partnership to bring the most promising products to wide-scale deployment.
Jun 1, 2014
Envisioning the TMC of the Future
During the past two decades, intelligent transportation system (ITS) infrastructures have been deployed in most major cities throughout the world, allowing operators to manage regional transportation assets more effectively. Next generation (NextGen) ITS applications are enabling individual agencies to cross jurisdictional boundaries in sharing information to make more informed decisions in optimizing the utilization of the multimodal transportation networks. NextGen ITS applications include integrated corridor management (ICM), transportation systems management and operations (TSM&O), active traffic management (ATM), managed lanes, and connected vehicles, to name a few. Th e “TMC of the Future” will off er operations staff an opportunity to select the applicable modules for performing their job in a more proactive manner. Figure 1 illustrates potential functions that may be accommodated by this TMC of the Future.
Jan 1, 2014
How to Take Adoption of Transportation Systems Management and Operations to the Next Level
U.S. DOT has undertaken an important initiative to bring the transportation system into the 21st century while also addressing growth, congestion, safety and other problems.
Sep 1, 2008
Incorporating TDM into the Land Development Process
While transportation demand management (TDM) usually has been applied as an effort to convince employees to use alternative transportation, there are diverse settings and contexts for using TDM. It can be applied systemwide as well as part of individual land development projects. TDM can be applied in the form of physical facilities as well as management and operations. This paper is based on a study that was sponsored by the Florida Department of Transportation and funded through the National Center for Transit Research. Based on the premise that a systemwide integrated approach to achieving transportation goals should be used, TDM is an essential component of this. TDM can complement land use planning, transportation system construction and transportation systems management in the development of a cost-effective and functional intermodal and multimodal transportation system. While the geographic focus of the original study was the state of Florida, the findings and recommendations will have application to municipalities nationwide. The purpose of this study was to determine ways that TDM could be more effectively incorporated into the land development process, so that the necessary foundation for later TDM program implementation is laid.
Aug 1, 2006
Transportation System Management and Operations: Mega Issue White Paper
The transportation community has experienced the beginnings of a cultural shift toward embedding transportation system management and operation into our culture, work ethic, skills mix and vocabulary. But, what is transportation system management and operations (TSMO)?
Jan 1, 2006
A Holistic Transportation Planning Framework for Management and Operations
Mainstreaming transportation systems management and operations into the transportation planning process requires a shift to a holistic approach, which recognizes the importance of regional, coordinated management and operations to the achievement of broad regional goals.
May 1, 2005