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Brake lights sensitive to braking force

Almost every time I sit in the co-driver's seat in a car, I get a feeling of fear and claustrophobia whehever the car at the front starts braking. I feel like the car in front may be braking more abruptly than the car I am sitting in. Hence, I squinch expecting a crash, which gladly has not happened yet.
The red braking ligths are scary. While their purpose is to inform the drivers behind that the car is braking, it fails at telling how much it is braking. Because one can't know for sure if the car is braking abruptly or just sligthy, the back driver may push the braking pedal stronger or with less force than needed, causing a car crash.
Hence, I have thougth of a solution: force sensitive braking lights. The idea is that the light is brigther when the braking force is larger and weaker when the braking force is smaller. However, it cannot be made just that simple. For the back driver to know how much the front car is braking, two characteristics are required: the current braking force and the maximum braking force.
The design problem is how to inform the back driver of the maximum braking force of the front car, in order to give him some context of how much is the front car trully braking.
The solution is simple: Imagine a circular light, whose edge is illuminated (preferrably not with red, as it may confuse drivers not familiar with the system). Now when the driver begins to brake, the central part of the ligth gets illuminated. As the braking force increases, the ligth expands to fill the whole light. This image will make it earier to understand:

Forcesensitivebrakingligths
The dotted light in the first case is a symbolic representation of the size of the light. Once the braking pedal is pressed, a blue glow shows around the light to show the maximum braking capacity of the car. The braking is initially weak, so braking light (shown in red) is weak/small. Then as the braking force increases also the breaking light brigthens/increases in size. When the braking pedal is pressed to its maximum the whole braking ligth becomes red, hence the ligth is very strong. When the driver releases the pedal, the red ligth as well as the blue glow dissapears.
With such a system in place, the back driver will know how much the front driver is braking and be able to react appropriately. 

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