Boston College

Please check your internet connection. If it is on and working, that means the MBTA's live data feed is currently unreachable due to an outage on their end. This is not an issue with In the Loop.

No trains are currently running for the night. If this seems incorrect, report it in the Discord server: discord.gg/KmGGY75rn4

Report bugs in the Discord server: discord.gg/RYckv4jz8n

Track Map

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WestboundEastbound

On this branch

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Loading trains...

Quick report

Type a car number from the set — no need to find the train first.

Car number

Station

Standing by until release (no set time — holding for dispatch)

Express from

Still stops at (optional)

Express to

New destination

Marks every car in this train's current set out of service — not just one car.

Yard

Rail number (optional — extra points if included)

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Status, livery/wrap, delivery date, and notes can only be edited while signed in; edits show the display name of whoever last saved them.

Moderation

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Publish Alerts & Diversions

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Report a Diversion/Closure

Line/branch

Direction

From station

Just this one station is closed (not a range)

To station

Also update the displayed destination for affected trains

Trains currently signed to

Should display as heading to

Notes (optional)

Starts

Start date/time

Expires in

Custom end time

Or enter an exact number of hours from now instead:

Editing an existing diversion. Cancel edit

Upcoming Diversions

Every diversion/closure currently posted, across every line — not just the one selected above. Moderators can edit or remove any of these; trusted members can remove their own.

Disruption Mode

During major disruptions (shuttle buses, single-tracking, etc.), trains can legitimately drop out of MBTA's live feed for longer stretches. Enabling this extends how long a train stays visible at its last known position after going quiet — from 10 minutes up to 25 — for everyone using the app.

Push an Alert

Sent to all users immediately when confirmed.

Alert text

Expires in

Push a Notification

Sent to all users immediately when confirmed.

Subject

Message

Expires in

Edit Logs

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Filter by user

Stats

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Points

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Green Line Officials

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CI = Chief Inspector · MCI = Mobile Chief Inspector

Bugs & Feature Requests

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Report bugs or suggest features in the In the Loop Discord server. Feature requests aren't guaranteed to be implemented.

discord.gg/RYckv4jz8n

Sign In

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Quick Report

Type a car number from the set — no need to find the train first.

‹ Back

Car number

Station

Standing by until release (no set time — holding for dispatch)

Express from

Still stops at (optional)

Express to

New destination

Marks every car in this train's current set out of service — not just one car.

Yard

Rail number (optional — extra points if included)

‹ Back

Account

This name appears next to any reports, edits, or roster changes you submit.

Your sign-in ID — Set a PIN below to sign in on another device using this ID and PIN instead of Google.

Remove snapshot watermark(Available to signed-in users. Applies to the Snapshot Map feature on the track map.)

Display

Abbreviate station names

Time/weather chip position

Date

Weather

Show seconds

24-hour time

Notifications

Push notifications(Required for any setting marked "push" below to be delivered while the app is closed.)

Browser notification permission(Required for the settings below to function.)

Notifications

Double Type 8s(in-app + push)

Pride train(in-app + push)

Type 9 cars

Cars back in service

Destination changes(push only)

Line changes(push only)

Cars marked out of service(push only)

Car back after a long gap(push only)

Minimum time untracked

T-Alerts

Receive a push notification as soon as the MBTA posts a new service alert for a line or branch, even while the app is closed. Requires push notifications to be enabled above.

Diversions (any line)(push only)

Applies to any diversion or closure, whether posted by the MBTA or reported by a moderator or trusted member, regardless of the line-specific settings below.

Green Line B(push only)

Green Line C(push only)

Green Line D(push only)

Green Line E(push only)

Mattapan Line(push only)

Red Line(push only)

Orange Line(push only)

Blue Line(push only)

Vehicle location sources

Moderator-only, temporary for testing. Controls which sources refreshVehicles actually uses right now — turning a source off is treated the same as that source being down, so the other takes over exactly like a real outage. Visible only to you.

MBTA rail feed (GTFS-rt)(primary source)

MBTA v3 API(secondary source)

In the Loop — Live MBTA Train Tracker

Welcome

Before you continue

Checking access…

Access Restricted

Boston College

Track Map

On this branch

Quick report

Moderation

Publish Alerts & Diversions

Edit Logs

Stats

Points

Green Line Officials

Bugs & Feature Requests

Sign In

Quick Report

In the Loop — Live MBTA Train Tracker

Welcome

Before you continue

Checking access…

Access Restricted

Track Map

On this branch

Quick report

Moderation

Publish Alerts & Diversions

Edit Logs

Stats

Points

Green Line Officials

Bugs & Feature Requests

Sign In

Quick Report

Details