Early One-way Roads

Horse-drawn carts could manage "this way only" long before 1940. Now your cobblestones can too.

Build one-way roads from the first year of the game. The base game only has one-way versions of the modern town streets, from 1940. This mod adds a one-way version of every other basic road, and each one unlocks and retires together with its two-way version. No road becomes available earlier than it would without the mod.

Features

• Old town streets: one-way extra small, small, medium and large, until 1940.
• Modern large street: the one large town street the base game has no one-way version of, from 1940.
• Country roads: one-way small, medium and large, old (until 1940) and modern (from 1940).
• Same width, speed and look as the two-way road, with a one-way arrow on the menu icon like the base game's one-way streets. Like the base game's one-way roads they cost about a third less to build and maintain.
• Towns never build them, so only the roads you choose become one-way.

How to use

• Pick a one-way road from the road menu, next to its two-way version, and drag it. Traffic runs in the direction you drag.
• To make an existing road one-way, build the one-way type over it. To turn it round, build it again in the other direction.

Notes

• Safe to add to an existing save. Removing it also keeps the save loading, but check the roads it added afterwards: they no longer have their one-way type.

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Testing tools

Towns & Streets: New York · Oregon · California · Texas · Pennsylvania · Alaska · Washington · Arizona · Minnesota · Florida · Colorado · Hawaii · New Mexico

Changelog

Revision 3 (2026-10-10)

• New: translations into Russian, German, French, Spanish, Italian, Dutch, Polish, Portuguese (Brazil), Japanese, Korean and Chinese (Simplified and Traditional). The mod follows the game's language setting.

Revision 2 (2026-10-10)

• Changed: adds a small marker file so other square mods can tell this mod is active. No change in game.

Revision 1 (2026-10-07)

• First release.