The AR 06 heavy-haul sleeper was specially developed for the extreme requirements of the North-South Railway Line in Saudi Arabia. The approximately 1,000 km long line is intended not only for freight trains but also for passenger trains. Extreme heat, high axle loads and sand drifts on the track are just a few of the special challenges. The design of this product combines the special customer specification with the high requirements of the AREMA Manual and is a durable and robust solution.