这些是交通标志。

These are traffic signs.

驾驶员必须能辨认交通标志。

A driver must be able to read traffic signs.

V形或箭头交通标志表示左方或右方有急转弯。

The chevron or arrow road sign indicates a sharp bend to the left or right.

但是他们只是驶过，把人体交通标志看作理所当然的事。

But they just pass by, taking the human traffic signal for granted.