To ensure a spatial cabin space without impairing reduction effect of a fine barometric wave.
In the leading vehicles 31, 41, a cross section area increase ratio of a cross section area increase range on a front side of a leading portion is larger than a cross section area increase ratio of a cross section area increase range on a rear side. An intermediate cross section area increase range is a portion corresponding to a driver's room and in the range, a cross section area increase ratio is smaller than the cross section area increase ranges on the front side and the rear side and the cross section area increase ratio of the former half portion is larger than the cross section area increase ratio of the latter half portion. A step part 32a is formed on a second vehicle 32 subsequent to the leading vehicle 31. Further, a step part 42a is formed on a leading part of a second vehicle 42 subsequent to the leading vehicle 41.
COPYRIGHT: (C)2007,JPO&INPIT
Isao Naruse
Kuriyama Kei
Katsuyuki Tsukahara
Nakai alone
Atsushi Sano
Kawasaki Heavy Industries, Ltd.
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Shinichi Nakajima