OK, but then where do you draw the line? What about an adult tricycle? How about an adult tricycle operated by an elderly lady who doesn't go much faster than a kid on a tricycle? Do you mean that kids shouldn't be allowed to operate on main roads? What if the kid is biking with parents? Triking along with mom pushing a stroller in a bike lane with no sidewalk? What if this main road is 20 years post-peak and has almost no car traffic?

There's a trike club in my area. Yep, trikes. They call them, proudly, trikes. And they are usually Harley-based, 3-wheeled motorcycles. Apparently they're meeting at the local McDonald's because I saw like 4 of the things parked there, should have stopped in and said Hi.