Don’t you just hate getting run over by a train and respawning without your blueprints?
Four belts for a 4 lane bus:
Underground belts spaced across, to tunnel under a 4 lane bus:
Split off the left most lane (let’s call it Lane 1) to the right:
Split off Lane 2 to the right:
Split off Lane 3 to the right:
Split off Lane 4 to the right:
The Factorio community is amazing, and the guys at Wube should be applauded for an amazing job. One of the particularly insightful things they did was to build an import/export function into the game (not surprising) but then make that available to the community. Perhaps that comes from it’s Minecraft beginnings. Either way, it was a fundamentally wise choice. In the spirit of open source, the community can share their ideas with each other.