[NikolaeVarius]

What. I see kids on bikes/trailers on bikes in NYC all the time.

[throwaway0a5e]

Count the wheels ;)

I chose my words carefully. Seems like bike trailers have mostly replaced those kid seats that used to go on the backs of bikes.

[ahoy]

I see these all the time in the more affluent areas of brooklyn. Two wheels, kids on the back.

https://cdn.shoplightspeed.com/shops/611178/files/23705435/y...

[reportingsjr]

I present to you this google image search: https://www.google.com/search?q=dutch+bicycle+kids&tbm=isch