More research is needed to determine best practice for red-light camera programmes, including how camera sites are selected, signing policies, publicity programmes and penalties.

需要更多的研究以确定闯红灯照相机计划最好的做法，包括如何选择照相机的安装地点，交通号志政策，宣传计划与罚责。

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"If the goal of employing red-light camera systems is to improve driver safety, the data suggest that the program has failed, " New Jersey state Sen.

WSJ: Jenkins: The Answer Is a Longer Yellow

After what felt like an eternity waiting, the little red light on the camera flickered, indicating that the image was ready to view.

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One such project is called NewsFlash, and uses high-frequency red and green light to transmit data to the built-in camera on a receiving device -- in this case Samsung's Epic 4G.

ENGADGET: NewsFlash uses high-frequency light to transmit data from iPad to smartphone, we go hands-on (video)