As the Tibet train runs on the world's highest railway, the Qinghai-Tibet Railway, the trains are tailor-made to handle the special high-altitude conditions to keep passengers comfortable all along the way. The totally enclosed train cars are equipped with heating/air conditioning, oxygen supplies, altitude displays and other advanced amenities. The trains to Tibet are considered to be the most comfortable trains in China. Passengers can enjoy a comfortable environment no matter where they are on the train.