Traffic incident cuts off the traffic flow into discontinuous flow, giving rise to congestion and vehicle delay.

交通事件使得事发路段的原有交通流变为间断交通流，行驶车辆在事发点上游形成排队等待现象。

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Vehicle delay at signalized intersections is the important measure to analyze the running efficiency and service level.

信号交叉口延误是评价信号交叉口运行效率和服务水平的重要度量。

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The object of the control arithmetic is to make the traffic trunk road unblocked and the average vehicle delay time shortest.

控制算法在保证交通畅通的情况下，使车辆延误时间尽可能地短。

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In the year ending December 2010, the provisional figure for average vehicle delay on the slowest 10% of journeys was 3.55 minutes per 10 miles, a fall of 9% since March 2008.

BBC: How are motorists saving fuel?

GM's international chief, Tim Lee, said the auto maker isn't ignoring the slowdown but it has no plans to delay vehicle projects, seeing new models as helping to battle back.

WSJ: In Geneva, a Car Party Amid Industry's Gloom

Now there is a week's delay for its operational start as it didn't get its new vehicle certificate in time from the Department for Transport (DfT).

BBC: Week-long wait for London's new Routemaster bus