哥本哈根——在这儿市中心的一条繁忙街道上,嵌入自行车道的一串绿灯一“绿波”——突然亮了,帮助骑自行车的人避开红灯。在进入这座城市的一条主干道上,卡车司机可以在智能手机上看到下个红绿灯何时会变灯。而在附近的一个郊区,新的LED街灯只会在车辆驶近时亮起来,车辆一通过就会变暗。这些旨在节省资金、减少化石燃料使用和减轻流动压力的装置是由街灯和传感器组成的一个日渐庞大的无线网络的一部分,宫员们希望这个网络能促使这个约有120万人口的城市实现其雄心勃勃的目标,即在2025年前成为全世界首个零排放的首都。最终,这个网络会发挥其他作用,比如 COPENHAGEN - On a busy street in the center of the city, a green light “Green Wave” embedded in the bike path suddenly lights up to help cyclists avoid the red light. On a main road into the city, truck drivers can see on smartphones when the next traffic light turns on. In a nearby suburb, the new LED street light will only light up as the vehicle approaches and the vehicle will darken as soon as it passes. These devices, designed to save money, reduce fossil fuel use and ease the pressure of mobility, are part of a growing wireless network of street lights and sensors that housewives hoped will enable the city of about 1.2 million to fulfill its The ambitious goal is to become the world’s first zero-emission capital by 2025. Ultimately, this network will play other roles, for example