I love this idea, but I have a few concerns. Here is one.

Will people be required to possess their own bike helmets in order to ride the Red Bikes. If not, I worry that the program may be encouraging unsafe riding habits. Too many Portlanders ride sans helmet already.

This is a city of hills, and cyclists must ride with automobile traffic. This is not a Eurpoean city with truly separate bicycle avenues. Until that changes, helmets should be encouraged in every possible way. How can this program do this?