127. 글의 흐름으로 보아, 주어진 문장이 들어가기에 가장 적절한 곳을 고르시오.
But neither are aware of this fact when it comes to unmarked crosswalks.
Studies do show that motorists are more likely to yield to pedestrians in marked crosswalks than at unmarked crosswalks. But as some researchers found, that does not necessarily make things safer. ( ① ) When they compared the way pedestrians crossed at both kinds of crosswalks on roads with considerable traffic volumes, they found that people at unmarked crosswalks tended to look both ways more often, waited more often for gaps in traffic, and crossed the road more quickly. ( ② ) Researchers suspect that both drivers and pedestrians are more aware that drivers should yield to pedestrians in marked crosswalks. ( ③ ) Not knowing traffic safety laws, it turns out, is actually a good thing for pedestrians. ( ④ ) Because they do not know whether cars are supposed to stop, they act more cautiously. ( ⑤ ) Marked crosswalks, by contrast, may give pedestrians an unrealistic picture of their own safety.