一項由德國研發的全自動懸浮單軌鐵路系統發表會於2月28日在北京舉行。活動目的為癱瘓中國各主要城市交通，堵塞街道和空氣污染尋求替代的方案。
將該技術引進中國的國際空列集團中國地區總經理林幼令表示，此「空軌」將利用H -Bahn（空軌之意）的懸浮式系統，由德國西門子公司開發的無人駕駛單軌鐵路客運工程技術。
林幼令指出，國際空列集團計劃在五年之內於中國各地興建 20至30部空中列車。該H -空軌系統時速約為 50公里（30英里），其四節車廂中每一車廂既可承載 75名乘客。
中國工程院院士王夢恕表示，這項新的運輸方式提案成本更低，比建地鐵所需時間來得更少。他還進一步表示：「國内許多中小城市由於其人口、國內生產總值和其他因素，以至於不適合蓋地鐵。即便蓋了，必將耗費大量的營運成本。」
北京市中心到西邊山區門頭溝的磁懸浮列車線也在當天開工。使用的是中國自家研發的技術，利用磁力讓車體飄浮運行於軌道上。該列車工程策劃總監常文森聲稱，此中低速的S1線在國內算是絕無僅有，也讓中國成為全球第二個擁有此類列車的國家。
人民日報報導指出，此項磁懸浮線的興建乃是有鑒於該沿線居民憂心，終日暴露於電磁輻射而衍生出的解決方案。
常文森還表示，磁浮線對沿線居民或環境無害，因為早期實驗證明，低速磁懸浮列車所發出的輻射近乎零。
但住在磁懸浮線附近，任職於中國鐵路通信信號集團公司研究設計院（工商註冊名：北京全路通信信號研究設計院）的齊姓資深工程師擔心，儘管有無害的測試證明，然而所用測試標準卻有別於歐洲的標準。
齊向人民日報表示：「不管他們說輻射有多麼微量，輻射存在的事實不容置疑，甚且其負面效應可能會在一至二十年後才浮現出來。」
A fully automatic suspended monorail system developed in Germany was introduced in Beijing Monday as an alternative to the traffic gridlock that clogs the streets and pollutes the air of China's major cities.
Lin Youling, president of the China Business Unit of Air Train International, which introduced the technology to China, said the "sky rails" will utilize the H-Bahn system, a suspended, driverless passenger monorail engineered by the Germany company Siemens.
Air Train International plans to build 20 to 30 sky trains in China within five years. The H-Bahn systems are designed to go about 50 kilometers (30 miles) an hour and to transport 75 passengers in each of its four cabins, Lin said.
Wang Mengshu, a member of the Chinese Academy of Engineering, said the newly proposed transport method costs less and take less time to build than subways.
"Many medium and small cities are not in a position where they can build subways, given their populations, GDPs and other factors," he said. "And even if they are allowed to build them, the cost of operating the subways will be huge."
Also on Monday, construction began on a maglev train line between downtown Beijing and the mountainous Mentougou district to the west. Using Chinese technology, magnets will levitate a train above a track.
The new low-to-medium speed S1 Line is the first of its kind in the country, making China the second nation in the world to have such a line, said Chang Wensen, chief project manager of the line.
The maglev line is being built over the objections of residents living along the line, who are worried about exposure to electromagnetic radiation, the People's Daily newspaper reports.
Chang said the maglev line will not harm people living near the tracks or the environment, because earlier experiments showed the lower speed maglev train emits almost no radiation.
But Qi Fansan, a senior engineer with the Beijing National Railway Research and Design Institute of Signal and Communication who lives near the maglev line, worries that although tests have indicated it will be safe, the standards used for testing are different from European standards.
Qi told the People's Daily, "The radiation will be there, no matter how small they said it is, and its negative impact may show in one or two decades."
全文及圖片詳見：ENS報導
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