These are the workhorses. You get 2-lane, 4-lane, and 6-lane variants. However, unlike standard splines, these include invisible pedestrian paths and traffic rules pre-attached. You do not need to place invisible "Human" paths separately; the sidewalk texture inherently knows where people can walk.
No addon is perfect. Before you purchase or download OMSI 2 Addon Simple Streets, you must be aware of the "Alpha Sorting" problem and aesthetic limitations. omsi 2 addon simple streets
Developed by the German modding team at BremenMods, Simple Streets is a modular street construction kit. In the default OMSI editor, creating a road involves placing complex prefabs (road segments) that often come with heavy poly-count meshes for sidewalks, kerbs, and vegetation. If a map creator places thousands of these high-detail objects across a whole city, the game engine struggles. These are the workhorses
Simple Streets solves this by stripping the road network down to its bare essentials. It provides a library of tiles—a "Lego set" of road pieces—that allows map builders to construct road networks visually and then "dress" them up as needed. You do not need to place invisible "Human"
You are likely running other mods. Here is the compatibility report:
Because the streets are "simple," you might worry your map looks empty. The trick is prop layering. Use Simple Streets for the road mesh, then layer high-detail third-party objects (e.g., trees, buildings, parked cars) along the sidewalks. The contrast between the simple road and the detailed props creates a stylish, modern aesthetic similar to Mini Metro or Townscaper but in 3D.