From e2baf1449f9bb9350f7b1f81bc050e2c537b6948 Mon Sep 17 00:00:00 2001 From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com> Date: Mon, 4 May 2026 15:54:48 -0400 Subject: [PATCH 1/2] Add interaction between TU and SA --- gtfs-realtime/spec/en/feed-entities.md | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/gtfs-realtime/spec/en/feed-entities.md b/gtfs-realtime/spec/en/feed-entities.md index f7ca62e99..bb759b0ab 100644 --- a/gtfs-realtime/spec/en/feed-entities.md +++ b/gtfs-realtime/spec/en/feed-entities.md @@ -32,6 +32,13 @@ A service alert will usually consist of some text which will describe the problem, and we also allow for URLs for more information as well as more structured information to help us understand who this service alert affects. +#### Interaction between Trip Updates and Service Alerts + +If data consumers use Service Alerts to affect routing results, and both Trip Updates +and Service Alerts apply but provide conflicting information, consumers should +give precedence to Trip Updates for routing results, unless there is clear +evidence that the Trip Updates is incorrect. + [More about Service Alerts...](service-alerts.md) ## Vehicle Positions From 92ef0e8bf17cc163d16ee89d11c099930b0c572e Mon Sep 17 00:00:00 2001 From: Tzu-Jen Chan <126435471+tzujenchanmbd@users.noreply.github.com> Date: Mon, 4 May 2026 16:41:51 -0400 Subject: [PATCH 2/2] change wording --- gtfs-realtime/spec/en/feed-entities.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/gtfs-realtime/spec/en/feed-entities.md b/gtfs-realtime/spec/en/feed-entities.md index bb759b0ab..b369d4ab8 100644 --- a/gtfs-realtime/spec/en/feed-entities.md +++ b/gtfs-realtime/spec/en/feed-entities.md @@ -34,9 +34,9 @@ structured information to help us understand who this service alert affects. #### Interaction between Trip Updates and Service Alerts -If data consumers use Service Alerts to affect routing results, and both Trip Updates +If data consumers use Service Alerts to affect routing decisions, and both Trip Updates and Service Alerts apply but provide conflicting information, consumers should -give precedence to Trip Updates for routing results, unless there is clear +give precedence to Trip Updates for routing decisions, unless there is clear evidence that the Trip Updates is incorrect. [More about Service Alerts...](service-alerts.md)