经过特殊设计，这些电池板可以直接安装在现有道路表层，它们相对便宜并且易于安装。

The panels are also designed so that they can be installed directly on top of existing roadways, making them relatively cheap and easy to install.

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然而，这是第一次将电池板设计成可直接铺设在现有道路表层，同时也是第一次将电板安装于公共道路的项目。

However, this is the first time a panel has been designed to be laid directly on top of existing roads and the first project to install the panels on public highways.

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然而现有道路的噪音问题仍有待解决。

However, noise from existing roads remains a problem.

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