"Track-friendly" bogies (or running gears) are modern railway structures designed to smoothly steer wheels in curves and minimize their angle of attack on the rail. Thanks to radially adjustable axles, friction is radically reduced, significantly extending the lifespan of both the wheels and the tracks. This smooth transit through curves also substantially dampens train noise and squealing, contributing to more eco-friendly operations. For operators, these bogies present a massive financial advantage, as they receive discounts on track access charges in many European countries due to the low rate of infrastructure damage. The result is an efficient technology that delivers mutual savings on maintenance and operational costs.