Pedestrians don't have mirrors to see what's going in behind them. They don't typically stay to one side (especially when walking in groups), and they don't sig

Pedestrians don't have mirrors to see what's going in behind them. They don't typically stay to one side (especially when walking in groups), and they don't signal their intention to change direction. All of these make riding at higher speeds impracticable when among pedestrians. Not being able to ride at higher speeds makes (e-)bikes less useful from a transportation point of view.