Actuated Signal Control (ASC) Working Group

The Actuated Signal Control Working Group (ASC WG) is responsible for development and maintenance of those NTCIP standards that are related to actuated signal control, specifically NTCIP 1202 (a data dictionary standard).

John Thai, City of Anaheim, and Doug Tarico, Intelight, are the co-chairs of the ASC WG.

To join the NTCIP ASC Working Group, or for questions concerning the status or content of ASC WG projects or standards, please send your request (with email address, name, and company/organization) to:


Active Projects

There are no active ASC Working Group projects at present.


The ASC WG is currently developing a revision of NTCIP 1202 v02. Draft NTCIP 1202 v03 (the revision). The objectives of this project are:

  1. Develop the NTCIP 1202 v03 standard assessing issues and integrating lessons learned from current deployments of the NTCIP 1202 standard into a Concept of Operation (ConOps), requirements, and design.
  2. Use a Systems Engineering Process (SEP) to ensure the completeness and correctness of NTCIP 1202 v03 standard and associated documents, and to ensure traceability and logical consistency.
  3. Address backward compatibility (multi-version interoperability) issues in NTCIP 1202 v03, as a consideration for systems that conform to NTCIP 1202:2005.
  4. Accommodate additional user needs, functional requirements, and System Design Description (SDD) related to additional functionalities that may be identified during Concept of Operations (Development), for example, support for a connected vehicle environment.

The project is currently in its final phase, with a Recommended Standard under consideration by AASHTO, ITE, and NEMA. Publication is anticipated in 1Q 2019.


Published Standards



Historical Standards

NTCIP 1202 v02, Object Definitions for Actuated Traffic Signal Controller (ASC) Units – version 02

NTCIP 1202 v02 defines the Actuated Traffic Signal Controller Unit (ASC) objects that are supported by devices that are NTCIP-compliant. The messaging between Transportation Management and ASCs is accomplished by using the NTCIP Application Layer services to convey requests to access or modify values stored in a given device; these values are referred to as objects. NTCIP 1202 v02 defines data elements for use with ASCs, and the data is defined using SNMP object-type format as defined in RFC 1212, in the NTCIP-defined format found in NTCIP 8004. Previously designated as NTCIP 1202:2005. Published November, 2005. Superceded by NTCIP 1202 v03A.