Even drivers hardened to the mayhem on China's roads might be unsettled by the idea of sitting under a bus while red and green lights flash.

就算是已经习惯于中国道路混乱状况的司机，或许也会对在一辆有红绿灯闪烁的大巴下行驶的念头感到不安。

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The white plastic is flanked on either end by lights that flash red or blue, depending on whether the device is synced.

ENGADGET: Node modular iOS sensor hands-on Hands-on