Winter frost on trolleybus catenary is causing sparks. Trolleybus in Riga (Škoda 27Tr Solaris) is going on Krišjana Valdemara iela during a cold winter day. Due to low temperatures and high humidity, Riga trolleybus overhead wires are frozen, this causes sparks to appear from trackless trolley catenary. Trolleybuses are an important part of public transport in Riga, they are operated by Rigas Satiksme.
Winter frost on trolleybus catenary 🚎🇱🇻
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