Z is for zero: Philly to teach Vision Zero traffic safety curriculum in city schools

Aimed to make crossing the street safer, pedestrian "refuge islands" are being built at more than a dozen intersections along Chestnut Street in West Philly.

The Vision Zero report aims to make the city’s roads safer and end traffic deaths.

Many cities worldwide embrace pedestrian-friendly design and even places around the US are playing with the concept. But what will it take for us to get there?