The Traffic Management Data Dictionary (TMDD) Standards were developed to support center-to-center communications as part of the regional deployment of ITS in order for centers to cooperate in the management of a corridor, arterial, incident mitigation, event management, etc. Hence the TMDD provides the dialogs, message sets, data frames, and data elements to manage the shared use of these devices and the regional sharing of data and incident management responsibility. As a result, the TMDD standards often reference elements of the NTCIP standards, but deal with the devices at a higher level of abstraction.
The NG TMDD project is proposed to replace the current TMDD (TMDD v3.1), which is a mature standard, but evolve to address new and emerging operational needs and industry trends and technologies. The most notable of these trends is the emergence and role of private non-infrastructure owner/operators that collect and manage real-time transportation data. The need to share more granular data using a Systems to Systems approach to support multiple entities to achieve common operational goals must be addressed. For instance the need for high precision position information by current and future real-time maps require locational accuracy where lane-specific details about an event or device are required.
Additionally the next gen TMDD standard will also add features which include aligning with the Traffic Incident Management (TIM) model, the ability to define the complexity of work zone data, the ability to exchange discrete microscopic data at the unit vehicle level and finally to handle data from mobile sources (such as roadway weather data from snowplows), probe data, mobile/portable dynamic message signs, or connected vehicles.
To participate in this project, please email as follows:
Subject: Next Generation Traffic Management Data Dictionary (NGTMDD) Stakeholder
Request for Review: Next Gen TMDD Standard’s Draft System Requirement Specification (SRS) Document (due by October 15, 2023)
On behalf of the ngTMDD co-chairs, we are happy to provide the Draft System Requirement Specification (SRS) document of Next Generation Traffic Management Data Dictionary (NGTMDD) standard project.
Attached you will find 2 documents:
It would be highly appreciated if you could please review the document and provide your comments/suggestions (you may use the comment spreadsheet) at your convenience. We are looking forward to receiving your response before the walkthrough (October 15, 2023).
Overall Status Under Development
|Final ng TMDD Standard||Not Started|
|Recommended ng TMDD Standard||Not Started|
|SDD Walkthrough Comment Resolution Report||Not Started|
|SDD Walkthrough Plan||Not Started|
|Draft System Design Details (SDD)||Not Started|
|SRS Walkthrough Comment Resolution Report||Under Development|
|SRS Walkthrough Plan||Under Development|
|ng TMDD v0.1||Draft System Requirement Specification (SRS)||Under Development|
|ConOps Walkthrough Comment Resolution Report||Published||5/31/2023|
|ConOps Walkthrough Plan||Published||3/7/2023|
|Draft Concept of Operations (ConOps)||
|System Engineering Management Plan (SEMP)||Published||8/16/2022|
|Project Management Plan (PMP)||Published||9/15/2022|
|Period of Performance (POP)||9/22/21-3/21/24|