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Random Munich pic

In spite of bad weather, we are showing sights of Munich to my Schwiegereltern (German is often more terse than English).

One thing has caught my eye: there was some construction right at tram tracks in a busy intersection, and workers managed to do it without disturbing a tram schedule.
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Every two or three minutes two special workers were blowing a horn (it looked like a steam punk fetish btw), and all other workers moved their machinery out of tram tracks. It was very entertaining to watch.