Here’s a post covering a number of good points about why outlawing children under 6 on bikes or trailers is sheer inanity.

http://totcycle.com/blog/family-cycling-outlaws.html

Yes: obesity epidemic, heighten fear of cars, avoid traffic reduction, avoid slower speed limits, lets use sketchy data from a single survey to pass another law! Lets make it illegal to bike our kids to school and to parks and their play dates. All hail nannytopia!