Intelligent Roadway Information System
View ➔ Plans and Schedules menu item
If Sync Actions is selected, the phase can only be changed if all associated devices are online. If Sticky is selected, messages sent with DMS actions will be configured to persist even if communication or power is lost.
The basic phases are deployed and undeployed. Additional phases can be added on the Plan Phases tab. Each phase must have a unique name. By specifying Hold Time, a transient phase will advance automatically to the Next Phase. Hold Time must be a multiple of 30 seconds.
DMS actions have an associated hashtag to determine which signs are affected by the action. The action happens when the corresponding action plan phase is selected. The message pattern indicates which message is activated. If flash beacon is selected, the sign's internal beacon will also be activated. Message priority determines the priority of messages created by the action.
DMS Action Tags
Some MULTI-like tags are supported in message patterns used by DMS actions. These tags are interpreted by IRIS before sending the message to the DMS. NOTE: they are only usable in action plan messages - not operator-selected ones.
|Exit ramp backup
|Parking area availability
|Slow traffic warning
|Scheduled time actions
|Travel time estimation
|Toll zone pricing
|Variable speed advisory
A ramp meter action causes the meter to begin metering when the specified phase is selected. When the plan is set to any other phase, the meter will shut off.
A beacon action can cause a beacon to be deployed when the action plan is set to the specified phase. When the plan is set to any other phase, the beacon will shut off.
A time action automatically changes the phase at specified dates and times. These events are scheduled using either a day plan or a specific date (but not both). A time of day must also be specified (HH:MM in 24-hour format). Whenever the scheduled time occurs, the action plan will be changed to the specified phase.
Time Action Tag
The time of a scheduled time action can be displayed in DMS messages using
DMS actions within the same action plan. A
action tag in the message pattern will be replaced with the
appropriate value. It has the following format:
dir: Chronological direction
n: Next scheduled time action after the current time
p: Previous scheduled time action before the current time
format: Time format pattern (
h aif omitted)
The format parameter is specified using a Java DateTimeFormatter pattern, summarized in this table:
|hour of day (0-23)
|AM or PM
|weekday (e.g. Mon)
|full weekday (e.g. Monday)
|day of month (1-31)
|month number (1-12)
|month (e.g. Jan)
|full month (e.g. January)
The default pattern,
h a, would format a time at 2 in the afternoon as
To include minutes,
h:mm a could be used instead.
ROAD WORK[nl]STARTING AT [tan,h:mm a]
If next scheduled time action is at 2:30 AM, the resulting message will be:
STARTING AT 2:30 AM
BLIZZARD WARNING[nl]FROM [tap][nl]UNTIL [tan]
If the time is between two scheduled time actions, 4 AM to 10 PM, the message will be:
FROM 4 AM
UNTIL 10 PM
A day plan is a set of days which can be used for scheduling. Day plans are specified with a table of day matchers. The matchers for a day plan determine whether a specific day is included in the plan or not. Day matchers flagged as holidays are excluded. Day matchers are specified by Month, Day, Week and Weekday. Any day which matches all specified fields will match. Shift is only required for days like Black Friday (Fourth Thursday of November +1).
On the Plan tab of the client interface, users can manually change the phase
of an action plan. If the user is in the list specified by the
action_plan_alert_list system attribute, an email will be sent to the
address specified by the
email_recipient_action_plan system attribute.
Whenever an action plan phase changes, a time-stamped record is added to the
action_plan_event table. These events are purged automatically when older
than the value of the
action_plan_event_purge_days system attribute.