Пожалуйста, сделайте описание, что это. Это остатки старой троллейбусной линии или столбы для новой?

Add the description what is it, please. Are these remnants of an old trolleybus line, or the poles for a new one?

These poles are remnants of former section of Ohrada - Vysočany, operated between 1951 and 1966 by routes 56, 57 and 63. Later this part of street was rebuilt as dead end because railway underpass in this street was demolished and whole railway station Praha - Libeň was rebuilt.