Along route 90 near San Antonio, brake lights are starting to flash. Twenty-five kilometers away, Sam Mendoza is sipping coffee in the region's "TransGuide" traffic management center, where 16 wall-mounted television monitors display scenes from some of the 109 video cameras peering at 100 kilometers of area highways. Suddenly, a beeping sound signals that traffic on Route 90 has slowed below 40 kilometers per hour, as sensed by some of the 1,700-odd magnetic-loop detectors embedded in the region's roads. Mendoza seizes a computer mouse and zooms a highway-mounted camera toward the problem spot; soon his monitor reveals two bearded men in the breakdown lane struggling to fix a pickup truck's flat tire. He quickly types a keyboard command, causing an arrow on an electronic sign hanging over the right-hand lane to flash from green to yellow. The light warns drivers about the flat-fixers, hopefully allowing them to avoid an accident or maybe find a different route.
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机译：沿着圣安东尼奥附近的90号公路，刹车灯开始闪烁。 Sam Mendoza距离该地区的“ TransGuide”交通管理中心有25公里，在这里喝咖啡，那里有16台壁挂电视监视器，显示了109台摄像机中的一些摄像机在100公里长的高速公路上窥视的景象。突然，一声哔哔声表明90号公路上的车速已降至每小时40公里以下，该地区道路上嵌入的1,700多个磁环探测器中的一些探测到了这种情况。门多萨（Mendoza）抓住电脑鼠标，将高速公路上安装的摄像头放大到问题点。不久，他的监视器显示出在故障车道上有两名大胡子男人在努力修理皮卡车的轮胎。他迅速键入键盘命令，使悬挂在右侧车道上的电子标志上的箭头从绿色闪烁为黄色。灯光警告驾驶员注意固定器，希望它们避免发生事故或寻找其他路线。
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