Taxi Icon important transportation possibility

I missing an Icon for an Taxi Station. I was hiking in Teneriffe an it was very intersting to walk one way and get back by an taxi to your start. In not so over crowed areas most Taxi Station has an sign with an # Nr. to call. And when you call this # the the taxi mostly arrives soon. If you somewhere and give only your positon there is only an small chance someone will pick you up. So I think Taxi Station icon is same important as Bus or other transportation. How can I add an taxi station icon to the icon bar?