This eloquent scientific study appearing in another thread also adds a couple of arguments to the anti-e-bike discussion.

[quote quote=1312342]the issue is not the “motorized bicycle” that is heavier and capable of higher velocity when compared to non motorized unit, the issue is safety…….. let me explain the rules of physics and the conservation of momentum in particular, momentum = mass x velocity.
i also have noticed that ebicycle riders are heavier than none ebike riders adding to the mass total and momentum

in the many times that i have participate, i have had accidental collision, and other than a few scratches and scrapes, all is well.
in a collision with a motor bicycle/rider, the lighter bicycle/rider will be injured more as momentum has been transferred from the heavier to the lighter one, “conservation of momentum.”

as we age, it is time to realize that our time is up, and be thankful that we were able to live and participate… there are other rides for old riders and i am 70 years old. i am looking…[/quote]

How can you argue with science?