In many parts of the world rear bike racks are used as seats for passengers:
also (big): http://www.ski-epic.com/amsterdam_bi...cycle_many.jpg
My bike has a very sturdy rear rack, bolted to the frame and supported by the rear axle. The rear wheel is steel and rated for 600 pounds. So I'm not worried too much about the weight. Are there other safety things I should be worried about (at low speeds)?
Also, MA law has a section on carrying passengers:
"a passenger shall ride only upon or astride a permanent and regular seat attached to the bicycle or to a trailer towed by the bicycle"
Chapter 85, Section 11B 2(i): http://www.massbike.org/bikelaw/mass.htm#C85S11A
(It also says that under 40lbs or 4 years there are additional things I don't care about and that 12 and younger needs a helmet)
Does anyone know if a bolted-on rear rack is usually considered "a permanent and regular seat attached to the bicycle"?