Red lights weren't enough. Center mounted third brake lights weren't enough. Mercedes Benz is going further by outfitting the S-Class with flashing brake lights. Mercedes research has shown that driver reaction times were shortened by up to 0.2 seconds if a flashing red warning signal is given instead of conventional lights during emergency braking. It has been approved in Europe – we're not sure if/when North America will get the same setup. We're waiting for a system that helps people pay attention when they are driving and the first step isn't displayed on a DVD screen.
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