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High-speed rail (HSR), passenger train that generally travels at least 200 km (124 miles) per hour and can cruise up to 355 km (221 miles) per hour, though some have reached higher speeds. More than 20 countries, largely in Asia and Europe, have high-speed rail networks. Transportation researchers

High-speed rail Definition, History, Technology, Development

High-speed rail Definition, History, Technology, Development

High-speed rail Definition, History, Technology, Development

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Mountain railroad

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Car, railroad vehicle

Mountain railroad

Mountain railroad