工程师们称这一技术可以让汽车之间即使保持更近的距离也能更安全地行驶，从而加倍公路运载量。
The engineers say the technology could double the capacity of roads by allowing cars to drive more safely while closer together.
铁道部回应说中国的工程师已经将国外技术提高，列车将以更高的时速安全运行。
The ministry said that Chinese engineers had improved on the foreign technology and that the trains were safe at the higher speeds.
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