I believe blue lights/lenses are reserved strictly for law enforcement. Blue
dot lenses are used a lot by 40's & 50's rodders today and originally they
were probably an early attempt at increasing night visibility. In the
response of the human eye, blue is the last color to fade (to be seen) in
dimming light, while red is a color that doesn't cause a pupillary response
and disturb night vision.
Craig Carter
In a message dated 4/21/2002 3:00:01 PM Pacific Daylight Time,
roadster@texoma.net writes:
> The other night I noticed something ahead of me that really caught my eye.
> As traffic slowed down I caught up with a motorcycle that had a blue dot
> tail light. It is the first time that I have actually seen one.
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