With the new updates and the drive to make the game mechanics' descriptions and names more uniform and comprehensible. One thing that has been bugging me is the fact that the rail signals names are not clear. Sure, veteran players will know what they mean and most people know that red means stop, green means go, but what does blue mean? You can hover the mouse over the name of the signal to look at the tooltip but in my opinion, it is a bad design to force players to read tooltips for understanding what the original function means. The names should clearly equate what the function does and for new players to quickly understand what they mean or do.
![Image](https://forums.factorio.com/images/ext/014f999cea512ffe33e50995186bf3bf.png)