>On a rational level I'm aware that this is probably my sheltered upbringing and that she will understand the dangers of car traffic better than I did

She can understand it all she wants, it won’t make a difference to a driver who is texting in a huge suv/pickup truck with a hood twice your daughter’s height.

It is objectively more dangerous to be a pedestrian/bicyclist/even a person in a smaller car than in previous decades.

And if it’s dark or raining outside, forget about it. Crossing a 50ft wide road with a 40mph speed limit (which means people are actually distracted driving at 50mph) as a kid is daunting.

A 50ft wide road is just 5 lanes, 2 in each direction, and 1 turning lane. Very common in the US, even in small communities.