RT Journal
A1 Woldman S
T1 BIcycle burden and balance
JF Archives of Pediatrics & Adolescent Medicine
JO Archives of Pediatrics & Adolescent Medicine
YR 2001
FD April 1
VO 155
IS 4
SP 525
OP 525
DO 10.1001/archpedi.155.4.525
UL http://dx.doi.org/10.1001/archpedi.155.4.525
AB 
However, I would like to add 2 points. It is my belief that bicycles are designed to be appropriately balanced for the rider alone. Any added burden, such as a trailer, "saddlebags," an infant/child seat, or a passenger sitting on the handlebars, mainframe, or on the rear with axle foot bars, dangerously disturbs the balance and therefore the safety of the rider and passengers. If these activities must occur, it is imperative that the rider and passengers wear bicycle helmets and other protective devices. This information should be an integral part of preventive counseling.