scope:

The communications between a Transportation Management Center (Central Computer), or portable maintenance computer and Dynamic Message Signs (DMS) is accomplished by using the NTCIP Application Layer services to convey requests to access or modify values of DMS objects resident in the devices linked together by an NTCIP network.

An NTCIP message consists of a specific Application Layer service and a set of data objects. An NTCIP message may be conveyed using any NTCIP defined class of service which has been specified to be compatible with the STMF.

The scope of this document is limited only to support functionality for DMSs used for transportation. The limits and descriptions of the parameters are established to give the user maximum flexibility to operate devices that either exist at the time this document was authored or may exist in the future. It is not within the scope of this document to specify ranges for any given parameter beyond the size.