Quote:
Originally Posted by Chvscks319
Come to think of it, some emergency vehicles have something similar around STL. Can't remember if it's ambulances or fire trucks.
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Emergency vehicles have a different set of regulations. Examples can be seen
here and
here. Remember too that many emergency vehicles do not fall under the FMVSS.Over the next years, you will see even more lighting added to emergency vehicles and greater use of traffic light preemption based on studies such as
this one.
In general, flashing lights are reserved for emergency vehicles.