Ent's Copper Rails

Copper rails come in four oxidation tiers, with a waxed variant for each, and each tier changes how far a cart's top speed can move when it rolls across the rail. Unoxidized copper makes the largest change, and the change shrinks as the copper ages. Powered copper rails raise the cart's maximum speed, while unpowered copper rails set the number a cart rolls over to. Powered rails are still needed to accelerate a cart, so the new rails govern the limit rather than the push.

A freshly placed cart starts at 8 blocks per second, and the mod lets its own top speed climb up to 64 blocks per second. Each cart remembers its own maximum, so carts on the same track can run at different speeds. The mod keeps carts attached to the track at high speed, and it is aimed at players who want faster travel on long rail lines. It runs on the client and the server, so both sides need it, and the mod requires Fabric API on either loader. Files are published for Fabric and NeoForge, for 26.2 and 26.3, with 1.1.0 as the latest build. The code is open source under the BSD 3-Clause License.