- Provide Advisories and Alerts

This page shows the collection of processes that generate and report on conditions at the HRI.

The key points about the facility are as follows:
- Generates the message to advise and protect all persons approaching and crossing railroad crossings,
- Reports real-time HRI traffic volume advisories as they approach an HRI.

There are four processes defined as Process Specifications (PSpecs) in this collection:

1) Generate Alerts and Advisories (
2) Provide Closure Parameters (
3) Report Alerts and Advisories (
4) Report HRI Status on Approach (

Parent Collection: 1.6.1 - Manage HRI Traffic Volume