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Realistic Traffic Control

by Gamearoo

Realistic Traffic Control adds traffic lights, railroad crossing equipment, pedestrian signals and programmable message boards to Minecraft Forge and NeoForge builds for 1.12.2 and 1.21.1.

ForgeNeoForgeClient and serverMIT License1.12.2 – 1.21.1

What it does

Realistic Traffic Control is a full rebuild of Gamearoo's take on the earlier Traffic Control mod by CSX8600, with fresh models and a new set of mechanics throughout. Traffic lights can be run manually or on automatic control systems, with sensors, timers and pedestrian crossing logic that handle the signal sequence. Railroad crossing equipment detects approaching trains, and digital signs act as programmable message boards.

Players set up and adjust the blocks through in-game menus, and scripting hooks allow more involved signal patterns such as blinking lights, directional countdowns and automatic signal cycles. Integration with supported computer mods is available for advanced automation. Recent development has added deeper integration with Create Power Grid, and the project is still maintained with fixes and improvements to the traffic, railroad, sign and automation systems.

Realistic Traffic Control is a client and server mod, so the server and every player need it. It is published for Forge and NeoForge across 1.12.2 – 1.21.1, with the 4.1.2 Forge build for 1.12.2 and the 4.2.1 NeoForge build for 1.21.1 in beta. It is released under the MIT License and is not open source. Full credit for the original concept goes to the Traffic Control mod and its author.

Key features

  1. Automatic traffic lights

    Signals run on manual or automatic control systems, so intersections can follow set sequences without constant input.

  2. Sensors and timers

    Sensors, timers and pedestrian crossing logic shape how lights change and when crossing signals appear.

  3. Railroad crossing equipment

    Crossing equipment detects trains as they approach, so road signals respond to rail traffic.

  4. Programmable message boards

    Digital signs can be programmed to show messages, suited to roads, stations and city layouts.

Compatibility

Latest build for each game version and loader.

1.21.1Not available4.2.1-1.21.1
1.12.24.1.2-1.12.2Not available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Railroad Blocks is open source under the MIT License, with Fabric, Forge, NeoForge and Quilt files for 1.12 – 1.21.1, and it shares the client and server environment of this mod. OpenSignals is open source under the Apache License 2.0, Forge only, for 1.12.2 – 1.18.2. Ultimate Road Signs and Signals is Forge only for 1.19 – 1.19.2, under the GNU General Public License v3.0 only, and it is not open source.

ModLoadersGame versionsEnvironmentUpdated
Realistic Traffic ControlForge and NeoForge1.12.2 – 1.21.1Client and server2026-09-09
Railroad BlocksFabric, Forge, NeoForge and Quilt1.12 – 1.21.1Client and server2026-03-13
OpenSignalsForge1.12.2 – 1.18.2Client and server2026-06-14
Ultimate Road Signs and SignalsForge1.19 – 1.19.2Client and server2024-01-23

Questions

Does Realistic Traffic Control need to be installed on the server?

Yes. It is a client and server mod, so the server and every player need it installed.

Which loaders and versions does Realistic Traffic Control support?

Forge builds exist for 1.12.2 and NeoForge builds for 1.21.1. The NeoForge build is currently in the beta channel.

Can Realistic Traffic Control work with Create?

Recent development includes deeper integration with Create Power Grid, so the mod connects with that power system.

More from Gamearoo

All projects

What the author says

Realistic Traffic Control is a complete reimagining of the original Traffic Control mod by CSX8600, developed and maintained by Gamearoo. Built for both Minecraft 1.12.2 Forge and Minecraft 1.21.1 NeoForge, RTC introduces a more immersive and realistic system of traffic lights, railroad equipment, sensors, pedestrian…
Gamearoo, on the Modrinth page

Official listing

Owner
Gamearoo
Published
2025-08-02
Updated on Modrinth
2026-09-09
Facts verified
2026-10-15