四类标准适用于交通干线道路两侧区域。

Category Standard is applicable for industrial areas.

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高斯密斯说，洛杉矶有1,200英里长的自行车道，但很多都在繁忙的干线道路旁，汽车和自行车争道现象严重。

Ms. Goldsmith says the city has 1, 200 miles of bikeways, but many of those are along busy thoroughfares on which cars and bikes compete for space.

youdao

高斯密斯说，洛杉矶有1，200英里长的自行车道，但很多都在繁忙的干线道路旁，汽车和自行车争道现象严重。

Ms. Goldsmith says the city has 1,200 miles of bikeways, but many of those are along busy thoroughfares on which cars and bikes compete for space.

youdao