Subconscious Democracy and Desire
This is a Desire Line. Cyclists invariably ride across the pavement here, for lack of a better option.
Instead of punishing them for it, the City of Copenhagen made it legal.
A Desire Line is where people decide they want to walk. You see it in parks, for example, when the grass is beaten down. Desire dictates that this is where people will walk. Urban planners can rarely predict it, so it's cool when the city respects this subconscious urban democracy.