去年12月，美国北卡罗来纳州的罗利市将一处室内公共停车场当作LED的试验场地（下面两张照片是前后对比效果）。
Last December Raleigh, N.C., turned one floor of a municipal parking garage into a testing ground for LEDs (see the before-and-after photos at cree.com/LEDcity).
每次停车掉头时，均应检查前后方向的路况。
Each time you stop while turning, check traffic in both directions.
前后方150米内没有车辆可以为停车提供足够的安全距离。
A 150 metre gap in both directions provides enough space to perform the move safely.
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