This was on my local news tonight and found it VERY interesting so thought I'd post. They're basically pursuing the ability to issue citations tracking speed by laser via drones. They're currently doing this now but only in a testing phase to somehow measure accuracy and not issuing speeding tickets. Yet.
Speed enforcment part starts at about the 2:40 mark into the video.
www.wtae.com
I thought this was very interesting...
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Speed enforcment part starts at about the 2:40 mark into the video.

Drones patrol Ross Township: Police use new tech for stop sign enforcement
The drones are quiet as they rise into the air mounted with several cameras. Their job? Keep watch on the roads below.

I thought this was very interesting...
Read more