You can fit a lot more bikes into a smaller space. Next time you're in a traffic jam, look at all the cars around you, likely most of them have only one person

You can fit a lot more bikes into a smaller space. Next time you're in a traffic jam, look at all the cars around you, likely most of them have only one person in it. Now try to visualize how much space each of those people would take up on a bike instead of a car. All of a sudden you're surrounded by empty space. Sure its possible to have traffic jams with bikes, but that threshold is so much higher.