CurseForge · Minecraft mod
MTR Traffic Addon
Addon for minecraft Transit Network adding traffic generation, traffic lights and more!
Quick answer
Which MTR Traffic Addon release should I use?
MTR Traffic Addon mta-26.8.1-fabric-1.21.1.jar targets 1.21.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is MTR Traffic Addon required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does MTR Traffic Addon mta-26.8.1-fabric-1.21.1.jar need?
mta-26.8.1-fabric-1.21.1.jar. Change the file and its required mods may change too.
Install Minecraft Transit Railway (Automated trains, planes, and more!), Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add MTR Traffic Addon without breaking your instance.
Built for MTR Traffic Addon mta-26.8.1-fabric-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use mta-26.8.1-fabric-1.21.1.jar. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Minecraft Transit Railway (Automated trains, planes, and more!), Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside mta-26.8.1-fabric-1.21.1.jar. It opens that exact file at the source.
About this project
What does MTR Traffic Addon add?

MTR Traffic Addon (BETA) adds generated road traffic to Minecraft Transit Railway worlds. Place traffic spawn and despawn connectors, manage routes through the Traffic Dashboard, and let vehicles drive through your MTR-based road network. For example you have built bus network using mtr and some resource packs - now you can generate car traffic, manage intersection traffic lights and more!
Features:
- Traffic Spawn and Despawn Connectors
- In-game Traffic Dashboard
- Vehicle pool selection per spawn point
- Intersection areas with signal phases
- Vehicle spacing, queueing, and MTR vehicle awareness
- 8 built in sedan models (MTA Mesh Sedan [8 color variants])
Important info:
- Requires Fabric, Fabric API, Minecraft 1.20.1, and MTR 4.0.4 or newer
- Designed for fabric and won't support forge in near future.
- Still in active development, so larger worlds and multiplayer setups may need testing
How To Use:
- Install Fabric API, Minecraft Transit Railway, and MTR Traffic Addon.
- Open your world and take the Traffic Spawn Connector, Traffic Despawn Connector, and Traffic Dashboard from the MTR Traffic Addon creative tab.
- Place spawn connectors where traffic should appear, and despawn connectors where traffic should leave.
- Open the Traffic Dashboard to view connectors, refresh routes, clear active vehicles, and manage vehicle pools.
- Select which vehicle models each spawn connector can use.
- For intersections, create an intersection area in the dashboard and assign signal groups for incoming roads.
- Enable the connectors/intersections and traffic will start spawning when a valid route exists.
Disclaimer:
- Backup your worlds first before using it!
- This mod is in alpha state and it requires custom resource packs with car models, however there are built-in MTA Sedan models with different color, but they are low-effort and it is recommended to download external car packs.
Project description from CurseForge.
Pick your setup
MTR Traffic Addon by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
2 loader builds1.20.4
1 loader build1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
MTR Traffic Addon versions and loaders
mta-26.8.1-fabric-1.21.1.jar
20 Aug 2026
mta-26.8.1-fabric-1.20.4.jar
20 Aug 2026
mta-26.8.1-forge-1.20.1.jar
20 Aug 2026
mta-26.8.1-fabric-1.20.1.jar
20 Aug 2026
mta-26.8-fabric-1.21.1.jar
2 Aug 2026
mta-26.8-fabric-1.20.4.jar
2 Aug 2026
mta-26.8-forge-1.20.1.jar
2 Aug 2026
mta-26.8-fabric-1.20.1.jar
2 Aug 2026
mta-26.7.3-fabric-1.20.1.jar
2 Aug 2026
mta-26.7.2-fabric-1.20.1.jar
28 Jul 2026
mta-26.7.2-forge-1.20.1.jar HOTFIX
mta-26.7.2-forge-1.20.1.jar
26 Jul 2026
mta-26.7.1-forge-1.20.1.jar HOTFIX
mta-26.7.1-forge-1.20.1.jar
23 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.
