Completed

Intersection Conflict Warning Systems (ICWS) are used to warn drivers on the mainline road of the presence of traffic at stop-controlled intersections and/or warn drivers at stop-controlled approaches of the presence of traffic on mainline roads. ICWS deployments are still relatively new with few deployments prior to 2010, however the number of deployments has increased in the past several years nationwide.

The ENTERPRISE Pooled Fund Study has completed several ICWS related projects from 2011 – 2015 including design and guidance for ICWS, system engineering documents for ICWS, and overall coordination and outreach with national standards groups, industry associations, and other pooled fund programs. Building off these previous efforts, ENTERPRISE conducted this project to identify and document issues related to the development and deployment of next-generation approaches to ICWS. This information was utilized to develop a roadmap of prioritized next steps to help guide future ICWS deployment efforts.

Related Documents/Links

For a listing of related documents and links to this intersection warning conflict systems (ICWS) ENTERPRISE project click here. For more information about the other phases of ENTERPRISE work with intersection conflict warning systems go to:

• Phase 1 – Developing Consistency in ITS Safety Solutions – Intersection Conflict Warning Systems (ICWS): The purpose of this project was to develop a consistent approach for accelerated, uniform deployment and further evaluation of intersection conflict warning systems (ICWS), and to recommend preliminary standards for MUTCD consideration. This work was initiated through a webinar and two in-person workshops. Participants included ENTERPRISE pooled fund states, other states that have deployed systems, FHWA, NCUTCD, AASHTO and NACE.
• Phase 2 – ICWS Coordination and Systems Engineering: This project furthered supported the standardization of ICWS by coordinating among the various national standards and association groups, and by developing a concept of operations and system requirements for the four types of ICWS identified in the Design and Evaluation Guidance for Intersection Conflict Warning Systems developed in Phase 1. 
• Phase 3 – ICWS Support and Outreach: This phase will continue coordination with national standards groups, industry associations and other pooled fund programs that have been engaged through the ENTERPRISE ICWS work. Phase 3 will also continue to provide ICWS deployment support to ENTERPRISE members.

In recent years, probe data generated by fleet vehicles and travelers themselves is being aggregated by third-party data providers and offered to agencies as comprehensive, real-time speed data. Before third-party data became available, the costs associated with deployment and maintenance of detectors often limited the coverage area for which state and local DOTs could monitor traffic. The benefits of this new probe/speed data include statewide coverage without the need for wide scale deployment of detectors. As many agencies have begun to use real-time speed data from third-party providers, the uses of the data have increased.

This ENTERPRISE project “Assess Speed Data for Traffic Management” first involved conducting an online search and contacting individuals at agencies to gather information on the use of real-time third-party speed data in operations. Then, these findings were analyzed to document and share common practices, challenges, and solutions to these challenges. Specifically, the objectives of this project included efforts to understand:

• Which DOTs are using the real-time speed data provided by third-party providers?
• How are DOTs using the data, especially for real-time traffic operations?
• What benefits are DOTs recognizing from the data?
• What challenges are DOTs facing (e.g., conflation of data) and how have these been addressed?
• How is speed data being combined with detector data, and what is the potential for speed data to supplement a more limited deployment of detectors for volume collection?

This project presents recent applications of new procurement practices, or traditional procurement practices applied in new ways, to partner with emerging technology providers. The final report includes information that may be useful to project managers as they carry out individual projects, to program managers exploring ways to proactively engage industry, and to contracting and procurement staff wanting information about new and innovative practices. The case studies and resources highlighted in this report were selected for how they addressed recent procurement challenges identified by ENTERPRISE members. The resources provide guidance on process, specialized information for specific technologies, and examples of procurement training. They represent a cross-section of general procurement and technology-specific procurement to help articulate agency needs, identify prospective partners, determine contracting processes, and guide projects through procurement when partnering with emerging technology providers. Case studies are presented in terms of the challenges that they address, and key procurement practices are also highlighted. They include a variety of innovative contracting approaches and project specific applications of different procurement processes.

The process of gathering information about road conditions during a winter storm typically involves plow operators, enforcement or other traffic operations staff reporting on conditions that they observe while on the road. These staff perform several critical functions during road weather events and reporting road conditions for traveler information is often less critical than other functions. This frequently leads to inconsistent, inaccurate and untimely reports. ENTERPRISE sponsored this effort to research what transportation agencies are doing to leverage technology and automate or assist with winter road condition reporting. Phase 1 of the effort focused on gathering information about how agencies were approaching automated and assisted classification of road conditions. Phase 2 explored specific attributes of data that can be used to automate road condition reporting with the intent of increasing agencies’ understanding and evaluation of this data. This was achieved by establishing a list of available data sources, providing an overview of the types of data available from each source, describing common characteristics for various types of data, and gathering information about agency experiences with data to automate the reporting of winter road conditions.

Intelligent Transportation Systems (ITS) provide cost-effective solutions for agencies to achieve their mobility objectives. Both agencies and travelers are dependent upon the availability and reliability of advanced technologies. As a result, the use of technology is increasing and agencies’ investments in ITS assets are increasing along with the effort required to plan, procure, manage, and operate them.

The purpose of this report is to summarize the current state of ITS asset management, both in the ENTERPRISE member agencies and across North America, and to describe the attributes and criteria being used to effectively support ITS asset management.

Active Transportation Management (ATM) encompasses a suite of strategies that give agencies the ability to dynamically manage recurrent and non-recurrent congestion based on prevailing and predicted traffic conditions. ATM approaches focus on influencing travel behavior with respect to lane/facility choices and operations. ATM deployments are still relatively new in the United States with few deployments prior to 2010, however the number of deployments has increased in the past decade nationwide. ENTERPRISE conducted this project to identify resources and document lessons learned related to the development and deployment of ATM strategies, with an emphasis on deployments in urban areas that include multiple applications (e.g. Variable Speed Limits (VSLs), dynamic queue warning, part-time shoulder running).