从交通人机系统的四大要素人、车、道路和环境出发，提出了相应的降低交通事故发生率的措施。
From four main factors of the traffic people-machine system, people, car, road and environment set out, raising the corresponding measure to lower the traffic accident occurrence rate.
它大大降低了交通事故的发生率。
2009年数据显示，随着该规划的实施，系统运行地区的交通事故发生率降低了90%。
The program has also decreased accident rates by 90 percent in corridors where the system operates, according to 2009 data.
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