IRIS
Intelligent Roadway Information System
Sign Messages
A sign message is an immutable record containing all information needed to display a message on a DMS. They are created when operators compose them, and also when device actions are scheduled. They are deleted automatically after being unused for a few minutes.
API Resources 🕵️
iris/sign_message(primary)iris/img/{name}.gifiris/api/sign_message(POST)
| Access | Primary |
|---|---|
| 👁️ View | name, sign_config, incident, multi, msg_owner, flash_beacon, msg_priority, duration |
Sign configuration determines the type of sign that can display the message.
The MULTI string contains the text and/or graphics of the message.
The msg_owner is a string containing 3 fields, separated by semicolons
(system; sources; user):
system: normally "IRIS"; possibly another systemsources: "operator" or action tag sources, separated by+user: name of user who created the message
Flash Beacon indicates whether an associated beacon should flash.
Duration determines how long a message will be displayed (minutes).
Message Priority
Priority determines precedence between operator messages and device actions.
| Low | Medium | High |
|---|---|---|
1: low_1 |
6: medium_1 |
11: high_1 |
2: low_2 |
7: medium_2 |
12: high_2 |
3: low_3 |
8: medium_3 |
13: high_3 |
4: low_4 |
9: medium_4 |
14: high_4 |
5: low_sys |
10: medium_sys |
15: high_sys |
Messages composed by operators have high_1 priority. Cleared incidents use
the low_sys priority. Messages sent by external systems are assigned to
medium_sys.