I have been involved in more than one rear-end collision since I started driving years ago. Once I was the one doing the hitting, in the other I was struck. In the one where I struck the other driver, I didn’t notice that he had hit his brakes hard until it was too late. Something like the Sudden Stop would have probably prevented the accident.

The Sudden Stop is a relatively simple concept. It is basically a set of lights that mounts to your license plate and flashes for around 3 seconds when you brake hard. It determines how fast you are decelerating by calculating the G-Force. This prevents it from flashing when you are just braking as usual.
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