<b>Evaluation of Performance of Bogie to Control Decrement in Wheel Load Using the RTRI Test Line</b>

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<p>When a vehicle runs through curved sections presenting significant twisting irregularities, the wheel load on the front axle on the outer rail may decrease. In such cases, if there are concomitant large lateral forces, the wheel will easily climb up the rail, increasing the risk of derailment. A new type of bogie has therefore been developed to prevent flange climb derailment by controlling decrease in wheel load. The bogie is equipped with a bogie frame composed of three blocks which are joined together via a rotating mechanism. The bogie follows the twisting of the track by rotating the side beams and controls any decrease in wheel load thereby improving safety by preventing derailment. Confirmation was obtained of the satisfactory performance of the bogie by conducting a series of experiments.</p>

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