Germany’s state-owned railway operator Deutsche Bahn plans to use transparent noise barriers in cities and on scenic routes in future. Passengers will be able to enjoy a view of the countryside with the transparent plastic wall elements, while residents will no longer have to live with grey walls on their doorstep, Deutsche Bahn said on Wednesday while announcing the new plans. The company presented a corresponding model at the Greentech Festival technology trade fair in Berlin. The first barriers are to be set up along the new S4 suburban railway line in Hamburg this year, the company said. T…