There's nothing very strange about seeing a white, yellow, or red traffic stripe on the street. But in the city of Oroville, California, about200 kilometers north of San Francisco, there are some stripes painted in bold green across the roadways.
在馬路上看到白、黃或紅色交通標線並不稀奇，但是在美國加州舊金山東北方將近兩百公里的奧路委市，有些馬路上卻加畫著鮮明的「環保綠線」。