And at 12:32 p.m. on April 28, 2025, Spain went black. We knew almost immediately when the connections with our coworkers were cut. Computers with the screen in black, trains stopped in the tunnels, frozen elevators between plants and on the street … on the street a normal life.
More or less.
Because beyond the tails in the Mercadona and the children running and shouting through the courtyard of school at abnormally late hours, traffic more or less flowed. Without available trains, passengers jumped to filmed traffic. In private cars, in public buses and making horsetop.
More or less, at greater or lesser speed, Traffic continued flowing. Yes, we have seen that in the center of the big cities such as Madrid or Barcelona, the main roads soon getting stuck. But it is also true that traffic worked with relative calm there in many other parts.
It was the confirmation that traffic can flow if we put a little all on our part. And it is the confirmation of why there are those who design cross -free crossings.
Traffic lights in Granada on April 28, 2025 during the national blackout
A little please
On March 17, 1926, almost 100 years ago, Madrid installed the first traffic light in Spain. He arrived to make “a more rational use of private cars and generally favor that of public transport, in addition to making citizen coexistence more pleasant and contributing to a greater and safer use of the street for pedestrians”, as read on municipal sides of the time.
Who was going to tell us that almost a century later, the radio would concatenate connections by Spanish cities in which the return of the light to the traffic lights of the street was celebrated. It was enough to hit the ear to the transistor to feel some relief in the voice of the reporters who finally pointed out that the light had returned to the traffic lights.
With the traffic lights it seemed to return normality. That red light that prohibits the passage to whoever crosses my path and leaves me free. That amber light that warns me of danger but it seems that it only yells at me to accelerate. But what if normality remained without traffic lights?
It is what happened in most of the country. Without lights to regulate traffic, cordiality, negotiation was imposed and we did not have to regret serious incidents. The supposed anarchy never became such and putting all on our part took control of the streets.
“We install traffic lights to promote fluidity and increase speed, against negotiation and In many cases we do the opposite“The words were expressed by Román Torre, a member of the XIXONÉS OBSERVATORY OF MOBILITY AND AUTHOR OF VARIOUS ARTICLES RELATED TO MOBILITY IN THE CITIES.
In his tweet, he referred to a crossing in which it is observed how vehicles circulate with total fluidity. Of course, it is not a crossing with the volume of traffic that we can find in the northern part of Madrid which, everything is said, usually stuck with and without traffic lights. And, in fact, the tower itself indicates at the end of the thread that it is a solution “that is not worth all sites.”
Click on the image to go to the original tweet
However, the video does show that on many occasions the fluidity of the traffic is guaranteed without traffic lights. And, the best thing is that it is not only guaranteed, it is also a safer solution. If there are no lights, the driver is obliged to reduce the speed when approaching a crossing because he does not have the traffic light safety network guaranteeing a free track. At lower speed, a possible clash is more unlikely, it would have lower consequences and, in addition, the possibility of an outrage are reduced.
The DGT contemplates how to act at the intersections without a priority of passage but it is enough to see a video recorded yesterday to check how the trading It is imposed to give way to each car little by little, without slowing traffic.
It is something that has been studied and applied in the Netherlands. An example is that of Alexanderplein in the center of Amsterdam. There, after various studies, it was decided to eliminate traffic lights and found that despite living cyclists and trams, traffic fluidity is better than without the lights that supposedly manage traffic. The secret is to observe the rest of the traffic agents.
Something similar is what is applied in Groningen where for years they apply the maximum “all green” for cyclists at 29 intersections in the city. Fully closing traffic to cars for a few seconds, it was found that if bicycles are allowed to circulate total freedom (a similar experience to do it without traffic lights) traffic is more fluid. One of the reasons is undoubtedly low speed that circulates that facilitates making decisions in very little space and, therefore, fluidity when taking one or another way.
That controlled chaos is possible thanks to the fact that we move “As we would behave if we were pedestrians”in Ford words. The company presented some time ago a solution to take advantage of communication between vehicles to eliminate traffic lights and, with them, unnecessary waiting. Without lights regulating traffic, he ensures that autonomous cars can move with total peace of mind because they reduce speed when they reach intersections and movements are safer.
The point is that what humans live yesterday. Torre explains in Migijon That the absence of lights causes drivers to take the initiative when crossing the intersection instead of “obeying” the green or red light. This prevents trumpeting with a stop, an acceleration and a new detention on the next street. Obviously, without traffic lights, the car stops but applying some negotiation between drivers, the arrests are much shorter as it can be seen in their videos.
Much of the secret is in that reduction in speed when approaching the intersection. No traffic light, the driver must circulate more slowly and in doing so Freezos are reduced. There is more reaction time so it is easier to adapt the speed and, therefore, flow with the rest of vehicles, cyclists or pedestrians.
A good example of how to reduce speed can help improve traffic fluidity is found in Japanese universities studies. These demonstrated how circulating at a sustained speed, the brake of a single vehicle causes an immediate jam and a wave that multiplies. Circular at a lower speed (and maintain the safety distance) helps to move at a more sustained speed because there is more time to adapt to traffic flow in case of an unforeseen event. The stops will be less assiduous and shorter.
Photo | WorldOfSoftware
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