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Aside from the issue of pure legality, which means that you can have legal penalties imposed for violating a speed limit, there are valid reasons for such limits. The faster you are driving, the less time you have to react to anything that is happening in terms of what other cars or pedestrians may be doing. And if you do have a collision, it will be more damaging at higher speeds. So speed limits are designed to be appropriate for the driving conditions of a particular road. And in view of the tremendous number of people who are killed or injured every day in traffic accidents, speed limits (and other rules of the road) are worth taking seriously.

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14y ago

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Could dark matter be causing the cosmic speed limit (the speed of light) as light gets slowed down when passing through dark matter?

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