Why are street light poles in a circular shape?

For wireless terminal applications like smart city construction, they need a kind of technology that can ensure long-distance and high-capacity connections. Thus, LoRa, as a

Street lights help light up streets and any possible places to ensure clear vision and safety for passersby and drivers. When choosing suitable LED street

Nowadays, almost everyone has heard of solar street lights. Because of people’s increasing concern about saving energy, solar power has become one of the best