Johnson City Regional ITS Architecture

City of Johnson City Rail Notification System

Status: Existing

Description

Roadway equipment used to alert motorists that a crossing is currently blocked by a train.

Stakeholders

Stakeholder	Role	Role Status
City of Johnson City	Owns	Existing

Physical Objects

ITS Roadway Equipment

Functional Objects

Functional Object	Description	User Defined
Roadway Standard Rail Crossing	'Roadway Standard Rail Crossing' manages highway traffic at highway–rail intersections (HRIs) where operational requirements do not dictate advanced features (e.g., where rail operational speeds are less than 80 miles per hour). Either passive (e.g., the crossbuck sign) or active warning systems (e.g., flashing lights and gates) are supported depending on the specific requirements for each intersection. These traditional HRI warning systems may also be augmented with other standard traffic management devices. The warning systems are activated on notification of an approaching train by interfaced wayside equipment. The equipment at the HRI may also be interconnected with adjacent signalized intersections so that local control can be adapted to highway–rail intersection activities. Health monitoring of the HRI equipment and interfaces is performed; detected abnormalities are reported through interfaces to the wayside interface equipment and the Traffic Management Center.	False

Physical Standards

Document Number	Title	Description
ITE ATC 5201	Advanced Transportation Controller	This standard defines the functionality and performance requirements for a modern ITS controller known as an ATC. It is similar to the NEMA TS–2 standard in that it defines basic capabilities but leaves hardware choices up to the manufacturer.
ITE ATC 5202	Model 2070 Controller Standard	This standard specifies the hardware for a modern, open–architecture controller for ITS applications that can run Linux and is capable of executing advanced signal controller logic, among other things.
ITE ATC 5301	Intelligent Transportation System Standard Specification for Roadside Cabinets	This standard specifies the characteristics of a modern controller cabinet for the ITS industry.
ITE ATC 5401	Application Programming Interface Standard for the Advanced Transportation Controller	This standard defines the application programmers' interface (API) that should be supported by an ATC, which is an open–architecture controller that can host multiple ITS applications.
NEMA TS 8	Cyber and Physical Security for Intelligent Transportation Systems	This specification describes how agencies and other transportation infrastructure owner/operators should implement cyber– and physical–security for ITS.
NEMA TS2	Traffic Controller Assemblies with NTCIP Requirements	This specification covers traffic signaling equipment used to facilitate and expedite the safe movement of pedestrians and vehicular traffic.