Sensor of car space / Sensor of car space

In the world, there are 80% traffic accidents owing to pile-up every year.
There are radar and an emergency brake system and so on in the car.
There are plenty of traffic accidents owing to pile-up happen either veterans or novices.
If can't change people's driving habits, then we can change human sense.
At night, people have poor or blurred vision.
Drivers can’t concentrate on the car spaces between an ahead-car.
warmming light will be on automatic when the car spaces become small,
warmming light illuminate the trail of ahead car that can warm driver.