South of Frankfurt 12 km of autobahn were a testing track for an e-highway, a modern version of trolley trucks intended for hybrid trucks. Apparently the power lines can be called catenary.
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pictures imperfect blog 
Power lines indeed hang in a catenary Elke.
Thanks for joining in 😀
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I’d never heard the word before and the German translations were not all that helpful. Maybe for engineers, not for me.
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I enjoy having words to make bloggers think. Once you know the meaning most times a photo or words come easily I hope 😀
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