Guess how they decide where to place crosswalks! Whatever you're thinking, it's not callous enough.
"the rules actually discourage installing crosswalks or pedestrian walk signals at intersections unless the risk of an accident is extreme. According to those rules, a lower-risk way across a street—like a crosswalk and traffic signal—is only warranted if one hundred people cross a street every hour for four hours. **Ninety-nine people running across the highway is not enough of a risk.**"