About JD's Speed Limits
From Factorio Mod PortalAllow limiting the speed of trains on certain sections of track.
JD's Speed Limits
A Factorio mod to limit the speed of trains on certain sections of track.
Introduction
Fast trains are dangerous, especially in busy areas. How many times have you been walking about your base, stepped onto the railway at the wrong time, and been squished by a train moving at 300 km/h, with no time to react? No longer!
With JD's Speed Limits you can slow trains down as they come into busy areas of your base, and let them speed back up when they get to the mainline!
Usage
To set a speed limit, connect a rail signal to a combinator, and set the "Speed" signal. The value of the signal is the speed limit in km/h.
Trains on a path through the signal will decelerate as they approach the new speed limit, and continue at that speed until they get a new speed limit. Trains passing a sign with a limit higher than their current speed limit won't accelerate until the entire train has passed the sign.
Trains decelerating to or maintaining a reduced speed will use proportionally less fuel than if they were accelerating.
Highlights
From source dataFootprint
Rated a light load on a server.
License
Published under GPL-3.0.
Last update
Its author last shipped an update 17 mo ago.
JD's Speed Limits on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
- Server side
- Required on the server
- Server load
- light
- Smallest plan we suggest
- Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.1.2, released 2025-06-11
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.1.2 | 2025-06-11 | 2.0 | n/a |
| 1.1.1 | 2025-06-10 | 2.0 | n/a |
| 1.1.0 | 2025-06-10 | 2.0 | n/a |
| 1.0.1 | 2025-06-07 | 2.0 | n/a |
| 1.0.0 | 2025-06-06 | 2.0 | n/a |
Run JD's Speed Limits on a Factorio server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogVehicles & ships
Cars, boats, aircraft, ships and other things to drive or fly.
Runs on your server
From source side supportFactorio Mod Portal lists JD's Speed Limits as required on the server. Check its Factorio Mod Portal page to see whether players need it too.
Compatibility
- Game
- Factorio
- Runs on
- Serverrequired on the server
Verified at the source
- ✓Factorio Mod PortalOfficial listing, checked 2026-10-09Open ↗
- ✓Authorjdcalvert, as published on Factorio Mod Portal
- ✓LicenseGPL-3.0Free
