Tramway poles in Vienna have padlocked disconnect levers. I have never seen them on residential power poles though. Rural areas still have wooden poles, only HV distribution is on steel grid poles. Street lighting here in Vienna are waterproof flourescent battens with 2 tubes strung on wires between houses or on octagonal galvanized steel poles. At midnight one of the tubes is shut off. Other cities use wood or concrete lighting poles. (I think in the outskirts of Vienna they also have wooden poles, but these areas can hardly be considered to be within city limits, they look _very_ rural and even have 230/400V overhead distribution, something otherwise unknown in Vienna, downtown overhead services were removed in the early 20th century). Old overhead services were done with 4 individual wires, modern installations use quadruplex, like the US triplex OH, only with insulated neutral, but even in very rural areas they're starting to switch over to underground distribution.
