A survey conducted by the japanese national police agency reveals that traffic - related deaths during the nation ' s traffic safety campaign were 7 . 4 % lower than the same period last year 日本警事厅(警政署)所做的一项调查报告显示，在全国交通安全活动期间，因交通意外丧命的事件已比去年同期低了百分之7 . 4 。
