Please make warning icons on trains removeable

[Pommes]

I would like to be able to click away the warning icons on trains and not have them pop up again for the same line until the line is changed.

Background: There are trains that only deliver to warehouses. These make inevitably loss. This is intentional and it is annoying to see this all the time.
Another example are trains that wait at land stations until they are fully loaded. If they wait too long, there is also a symbol that I don't want to see, because I want the trains to wait that long.