Physical evidence: no one has just been driving and texting, but it's safe

And also shows that if you do not use your phone when driving, you will not have to hear the siren of the driver behind each green light.

Almost everyone agrees that driving with distraction is extremely dangerous, but the main distraction factor (in this era) is probably a mobile phone . People just have to check what the latest message is, who just likes my photo / releases my Instagram heart / sends me an inbox message just to satisfy the curiosity and satisfaction that I have to hold onto the phone own. That is why their lives are threatened.

People have to check what the latest announcement is, which makes their lives threatening to drive.

In the new iOS version of Apple, a new feature appears: driving features. Your phone will know when you are using the means to move, and it will automatically stop showing all notifications until you stop the car completely. It's convenient, but it's also sad to see that people MUST add this feature to their phones.

But what the hell is this related to physics?"Believe me , " said Rhett Allain, an assistant professor of physics at Southeastern Louisiana University, saying that everything will be all about physics, so keep reading the following article.

Simply put, the problem lies in speed.

On the road, your phone suddenly vibrated. Remind yourself that 'dragging your phone to see it for a second is nothing', so unlock your phone with a gesture of pressing the screen / pressing the fingerprint / raised to the face to get the iris and feel you are right . You are wrong.

You are going at "v" speed and it takes you a second (as you say yourself) to look over the phone one by one. That will be one second that you take your eyes off the path you are going. What happens in a second? Let's calculate a bit, find the average velocity.

In the above formula, we have Δx which is the distance you travel, Δt represents the distance traveled by that distance (not always the speed and the distance divided by the time, the physics says so). In this case, the time to travel that distance (Δt) will be 1 second. Crossing, we have the formula below:

If the speed is very small, the distance traveled within 1 second will be small. Assuming you are going at 1 m / s (3.6 km / h), it is obvious that you will be able to walk 1 meter within 1 second. If you are going at 25 m / s (90km / h - choose a slightly larger number to convert to a round, single-handed 40 km / h = 11.111 m / s), then you will be able to walk 25 meters within have 1 second.

25 meters! It is not a short distance, and that is the distance you can go when you glance at that phone screen. There are many things that can happen in that distance of 25 meters, and that has not taken into account the time you need to react to any event taking place on that distance.

Although many other things can distract you: look down at the kilometer clock, check the gasoline, glance at your pretty friend, stand in the way, remind people who haven't brushed their feet, . Can't blame it completely for mobile phones, but the above calculations also show you that a second is also extremely important. I have the phrase 'fast one second, slow all my life' , right version should probably be 'unaware of the road for a second, slow for life' , no matter how good the tone is.

Don't just text and drive.

So what about the stop at the red light?

It seems that it will be a reasonable time to pull out the phone to check if the virtual live photo has just reached 19 likes yet and has any 'indignation' . But it is still not a thing to do, because you are affecting everyone else.

You stop the moment the light turns red, because you yourself are a law-abiding person. Red light goes to 60 seconds and you pull out your phone to check and surf. That action has distracted you.

Under normal circumstances, when the light turns green, the first person will go to the second and the third and so on. Suppose, the driver has a 1-second response time to a green light and takes 1 second to pedal / pull the accelerator to run. If the green light is 60 seconds, there will be 30 vehicles starting up and perhaps, about 20 cars will pass through the trot. It was a dream in the future, where no one was upset about waiting for the red light, everyone waited patiently for their turn to go. Most importantly, in that world, no one clicks the horn NOW for the moment when the lamp turns green, urging people forward.

Put your phone down and focus on driving, to avoid burning lights in the summer sun.

But if people look at the phone instead of looking at the street lamp, the reaction time will increase. Generous thought that the reaction time of the driver will be 2 seconds - including startled to recognize the green, turn off the phone put into the bag (or do not need to store, wearing other hijackers), then the green light range 60 the second second, there were only 20 vehicles moving and perhaps only 15 vehicles passed through. The phone made the road jam like that.

So, next time, put down your phone and focus on driving, to avoid the burning lights of the summer sun. The power of mankind comes from the community, and when each individual has a little more responsibility, we won't have to wait for the red light for too long.