I think in many places we have gotten to the point where the planning, processes, and public approval process for some of these simple projects is more costly in time and money than just building it as a temporary experiment and revisiting it in a year or two to measure the outcome.

Not that there shouldn't still be some kind of standards and community approval, but I think we can afford to set that at a lower bar for certain categories of easily reversible projects.

And hopefully incorporating more of these ideas can teach us to be more efficient on transit infrastructure projects in general, where the US often significantly trails other countries on cost and implementation time.