The messaging between the Transportation Management Center and field devices 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 1201 v03 identifies and defines object definitions that may be supported by multiple device types (e.g., actuated signal controllers and dynamic message signs). In the NTCIP family of standards, objects for a given device type are grouped in a device-type-specific data dictionary standard.

Customers who purchased NEMA NTCIP 1201
also purchased

• NEMA NTCIP 1202 : National Transportation Communications for ITS Protocol Object Definitions for Actuated Traffic Signal Controller (ASC) Units - version 02-Version 2.19
• NEMA NTCIP 1203 : Object Definitions for Dynamic Message Signs (DMS)-Formerly NEMA TS 3.6-1997
• NEMA NTCIP 1204 : National Transportation Communications for ITS Protocol - Object Definitions for Environmental Sensor Stations v02-Version 02.24
• NEMA NTCIP 1211 : National Transportation Communications for ITS Protocol Object Definitions for Signal Control and Prioritization-Version 01.38

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