Lighting accounts for about 7% of the total electricity consumed in the US. Since lighting is often far removed from the power source—such as the distance from a power plant to street lamps on a remote highway—a lot of energy is lost during transmission.

在美国，照明约占总耗电量的7%。由于照明通常远离电源——例如从发电厂到偏远公路上的路灯——因此大量的能源在传输过程中会损失掉。

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Therefore , it has practical significance to carry out the technology research on highway tunnel lighting.

因此开展对公路隧道照明技术研究具有重要的现实意义。

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Applications for Evergreen's solar cells and systems include highway call boxes, microwave stations, street and billboard lighting and off-grid rural electrification.

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