The Siekierki combined-heat-and-power plant supplies a large share of Warsaw’s energy and relies on an intensive rail service for moving feedstocks and finished products. The public roads leading to the plant’s siding included level crossings that lacked modern signalling devices, which increased the risk of collisions and limited traffic control. A comprehensive upgrade was therefore essential to eliminate hazards, meet current safety standards and safeguard uninterrupted energy deliveries.