API Reference

---------------| | */attributes/effect| Enumerated| | */attributes/service_effect | Human-readable | ## Timeline There are 3 timeline related attributes | JSON pointer| Description| |--------------------------------------------------------------------------------------------------------------------------------------| | */attributes/active_period | Exact Date/Time ranges alert is active| | */attributes/lifecycle| Enumerated， header */attributes/header， machine-readable description of */attributes/active_period | | */attributes/timeframe| Human-readable description of */attributes/active_period| 。

route type。

An effect (enumerated in */attributes/effect and human-readable in */attributes/service_effect) on a provided service (facility， short header (*/attributes/short_header)， image (*/attributes/image)， and image alternative text (*/attributes/image_alternative_text) that is active for one or more periods(*/attributes/active_period) caused by a cause (*/attribute/cause) that somewhere in its lifecycle (enumerated in */attributes/lifecycle and human-readable in */attributes/timeframe). See ## Descriptions There are 7 descriptive attributes. | JSON pointer| Usage| |----------------------------------------------------------------------------------------------------------------------------| | */attributes/banner| Display as alert across application/website| | */attributes/short_header | When */attributes/header is too long to display| | */attributes/header| Used before showing and prepended to */attributes/description | | */attributes/description | Used when user asks to expand alert.| | */attributes/image| URL to descriptive image.| | */attributes/image_alternative_text | Text that describes image linked in url| ## Effect | JSON pointer|| |----------------------------------------------

route， description (*/attributes/description)， stop and/or trip in /*/attributes/informed_entity) described by a banner (*/attributes/banner)，。