Jo Tanner, with Britain's Freight Transport association says there are lots of untold costs.

就职于英国货物运输协会的乔。坦纳表示，还有很多难以估计的损失。

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And according to the International air Transport Association, an airline grouping, air freight is booming, up by 34% in May on a year-on-year basis.

而按照国际航空运输协会，今年五月份空运运价同比涨幅达到了34%。

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Christopher Snelling, of the Freight Transport Association backed the plans, particularly the increased use of segregated cycle lanes.

BBC: Motorist group brands London cycling plan 'bonkers'

The Freight Transport Association said while the M6 closures would cause disruption, it was needed to improve congestion.

BBC: Birmingham motorway congestion 'harming economy'