City kids can get on the bus or urban rail in actual big cities. Even in places like urban philippines or mexico where there is [often] no public transport, collectivos take up this niche. Kids abound in these places even in places like Manila where traffic is way worse and way more homicidal, and they take the jeepnee to go to the next barangay.

It's really mainly in the suburbs where neighborhoods are choked off by bike unfriendly freeways and no for-hire transit.