Roadway Standard Rail Crossing

Overview

'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.

This functional object is included in the "ITS Roadway Equipment" physical object.

This functional object is included in the following service packages:

• TM13: Standard Railroad Grade Crossing

This functional object is mapped to the following Functional View PSpecs:

• 1.1.1.1: Process Traffic Sensor Data
• 1.2.7.1: Process Indicator Output Data for Roads
• 1.6.1.2.1: Control HRI Traffic Signals
• 1.6.1.2.2: Control HRI Warnings and Barriers
• 1.6.1.2.3: Provide SSR Device Controls
• 1.6.1.2.5: Manage Device Control
• 1.6.1.2.6: Maintain Device State
• 1.6.1.3: Perform Equipment Self-Test
• 1.6.1.4.2: Provide Closure Parameters
• 1.6.1.4.4: Report HRI Status on Approach
• 1.6.1.7.1: Control Traffic Volume at Active HRI
• 1.6.1.7.2: Close HRI on Command
• 1.6.3.1: Interact with Wayside Systems
• 1.6.5.1: Provide Interactive Interface
• 1.6.5.2: Determine HRI Status
• 1.6.5.3: Maintain HRI Closure Data

Requirements

Information Flows

Standards

The following table lists the standards associated with the functional object itself (as opposed to standards associated with an interface).