Slow Zone Bot

Posts new and fixed MBTA slow zones every morning, with links back to the dashboard.

Repo @mbtaslowzonebot on Mastodon

Stack	A single Python script
Runs on	GitHub Actions, daily at 13:05 UTC
Deploys	Nothing to deploy: the workflow runs whatever is on main

flowchart LR
    sz["slow-zones"] --> json[("dashboard.transitmatters.org<br/>static/slowzones/all_slow.json")]
    json --> bot["Slow Zone Bot<br/><small>GitHub Actions</small>"]
    bot --> x("X / Twitter") & masto("Mastodon") & bsky("Bluesky") & slack("Slack")

Good to know

• Every PR runs the bot with --dry-run, so you can see what it would post.
• If all_slow.json wasn't updated today, the bot fails on purpose. Check slow-zones first.