CactusBrick has a standard minifig scale city road module. This allows for multiple club members to add to our city/train layout. The standard is built onto of a 32×32 baseplate. The road section itself is 32 studs wide laying on the side between sidewalks on each edge. Here’s a picture of a basic road section:
The road section itself going from bottom to top is a full white plate layer, 5 black bricks, a striped white/black plate layer (2 studs white, 4 studs black, repeat), 5 black bricks, a yellow plate, a black plate, another yellow plate, 5 black bricks, a striped white/black plate layer (same pattern as previous striped layer), 5 black bricks and a layer of white tile for the top.
The sidewalk is 2 studs wide on one side and 3 studs wide on the other. The sidewalk is build with layer of brick on top of the baseplate with a layer of tile on top of the brick. The outer edge of the sidewalk has the standard Technic Brick with Hole at the 10th and 11th stud location from both edges.
The edge of the sidewalk (next to the road) is Light Bluish Gray tile for both sides of the road with Dark Bluish Gray tile for the remaining sidewalk. Depending on what’s next to the road, green bricks/plates are allowed for the sidewalk as well as the entire sidewalk being Light Bluish Gray if the building next to it has Light Bluish Gray sidewalks. Optional features of the road include the studs on the side in the 3 stud wide sidewalk section to hold the road and a technic brick on the side of the road to line up with other roads. Also, there are 3-way and 4-way intersections as well as curves. The most basic additional feature is a crosswalk for some of the roads.