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There are motor vehicle chases every day and it should be easy to prevent. Many vehicles can be started from quite a distance with a small fob. Why can't a similar system be used to slow a vehicle down? Law enforcement could have a transmitter that sends a signal that tells the engine computer to slow the engine revolutions to keep the speed to around 25 mph or less. It could be done with a narrow beam to slow as few vehicles as possible or a wider beam to slow all traffic. The slowing would last for a certain amount of time, say 2 to 3 minutes after the signal is no longer present so any vehicles that aren't being pursued would be back to normal.
They could also add a way to notify drivers that emergency vehicles are nearby either coming up from behind or stopped on the road ahead. Modern vehicles use the radios for things like keys left in the ignition or lights left on.
Many new vehicles have GPS systems. My Garmin GPS has the speed limit on the screen in black letters that turn red if I exceed the limit. A factory GPS could be used to prevent vehicles from exceeding speed limits by more than a certain amount.
They could also add a way to notify drivers that emergency vehicles are nearby either coming up from behind or stopped on the road ahead. Modern vehicles use the radios for things like keys left in the ignition or lights left on.
Many new vehicles have GPS systems. My Garmin GPS has the speed limit on the screen in black letters that turn red if I exceed the limit. A factory GPS could be used to prevent vehicles from exceeding speed limits by more than a certain amount.