Paint, posts and the five-week bike lane.

A street project can spend years being discussed before anyone sees what it might feel like. Quick-build work offers a different sequence: use paint, flexible posts, planters, or temporary curbs to make a change on the ground in weeks, observe how it works, and refine it. The materials are modest. The change in the conversation is not.

I am Ines Halvorsen, a former transit planner. I have watched people react to a colored line on a rendering as if it were a final verdict. Then a temporary lane appears, and the conversation becomes specific: that loading area needs room; this crossing is hard to see; the turn works better if the posts move two feet. People are responding to something they can actually use.

Build, observe, adjust.

A quick-build bike lane might begin with paint that marks a path and flexible posts that discourage drivers from entering it. A project can add planters or temporary curbs where more separation is needed. The team can watch how people ride, where vehicles stop, how deliveries work, and whether intersections need a different treatment. The result is not a substitute for engineering; it is a way to learn in the street while providing a useful change sooner.

The approach can shorten the time between an idea and real evidence. A city does not need to wait for a complete reconstruction to test a lane arrangement. It can find issues before committing to permanent concrete, and revise the design based on observation and feedback. A temporary project is most useful when the agency defines what it wants to learn and commits to maintaining the installation while it learns.

A line on a rendering invites an argument about possibility. A lane on the street invites an argument about what to fix.

The risks are real, too.

Paint and flexible posts are not magic protection. Posts can be damaged, knocked over, or spaced in a way that leaves gaps. Snow removal, street sweeping, drainage, loading, and emergency access all need a plan. If a lane is not maintained, it can become cluttered or confusing, and riders may decide it is not safe enough to use.

“Temporary” can also become an excuse for neglect. A pilot may remain in place for years without the upkeep, evaluation, or investment needed to make it work well. That is not tactical urbanism; it is an unfinished project. The agency should state how long the pilot will run, who will maintain it, how feedback is gathered, and what conditions would lead to changes or permanent construction.

The same logic works for bus lanes.

Bus lanes are another place where a quick-build approach can make a delayed promise visible. Red paint and flexible posts can mark a lane quickly, giving buses a first layer of separation without waiting for a full street reconstruction. A short priority segment can test how buses move through a known bottleneck and show drivers and passengers what the street is meant to do.

But a red lane is only useful if it remains clear and connects to the places where buses lose time. Enforcement, curb access, turns, loading, and intersections matter. A lane that ends just before the queue may look persuasive in a photo and do little for the trip. Quick construction should accelerate learning and service, not lower the standard for the result.

A five-week installation cannot solve every conflict in street design. It can replace abstract arguments with shared experience, expose problems while they are still affordable to fix, and give a city a reason to keep moving. The best temporary project is not one that stays temporary forever. It is one that teaches the city what to build next.

— Ines