Originally Posted by
Artkansas
Maybe. I rode a motorcycle for a number of years. The rotational inertia of the bigger tire, hub, rim and brakes provide more damping of steering input when compared to a bicycle.
But the reason for braking with the back brake while signaling is pure physics. I'm not a physicist, but with real world experimentation, there was a dramatic difference in how much the front end turns when braking with the rear brake as opposed to the front brake. Try it.
Between the slower speeds I ride at (my commute involves lots of speeding up and slowing down, keeping my average speed pretty low) and the habit of using the front brake for most of my braking it may take me a while to notice this. One thing I do use the rear brake for is for making noise when stopping around people standing in the MUP I commute on. The rear brake is easy to lock and skid, making it more effective at attracting the attention of the imobile pedestrians.