Most of the products used in our time have multi-functional characteristics, which are generally speaking variable or multi-purpose. This versatile feature, I remember the Swiss Army knife we saw when we were in elementary school, the first time I saw it, it was amazing, how this knife has so many functions. This may be a kind of invention, such as the teacher at that time also explained the concept of invention and creation, I think I can also invent and create a lot of products.
Urban construction is also inseparable from the characteristics of versatility, designers can consider soliciting opinions from the society before making a plan, and study whether their opinions have good versatility. This also avoids the repeated improvement of the project, but also wastes the national resources and the expectations of the citizens.
Usually, the pedestrian bridge is a sidewalk to cross the road, whether it can add one more function, that is, wading to pick up the car bridge. When the footbridge is windy and rainy and causes water, the vehicle cannot pass through, causing blockage. At this time, the pedestrian bridge bridge descends, opens the guardrails on both sides, turns the direction, and moves the berth. Such a scene is not very comfortable, and the public no longer has to worry about wading in the water on windy and rainy days. There are too many such examples, and one more bus stop is simple, impractical, and can't cover the wind and rain. Changing it often is still of little effect. It is also possible to build a café on the second or third floor, which integrates leisure, sightseeing, and waiting for the bus.