The more I use #bicycle, the more I understand the problems of those who use their manual labor power for transport (including people who walk on the road). When I ride bike, I break for them to cross first.
It's easy to sit in a bike and just accelerate comfortably, but it requires good amount of labor power to pedal the cycle to bring it up to a speed and then all of the sudden, we cannot make them to break for our comfort.