I’ve made some further changes to the layout, adding the short status information below the tube line name, and switched to only one traffic light for each line.

I used Expression Blend, which looks like quite a good tool. I’m not sure how far I’ll be able to take this, as the design side isn’t really one of my strengths. My  impressions of XAML and WPF, are that it’s big, complicated, and very powerful.

I think it will enable teams to develop very good looking applications, if they can add a designer into the programming team.