Yeah, this might create more problems than it solves. I was mainly trying to express support for taking the speeding problem seriously. Also, I thought that the article was a bit hyperbolic in that it left the impression that the device would be used as a weapon, rather than as a communications device. (Albeit, a very loud, perhaps dangerous-to-use-with-moving-traffic type of communications device.)
BTW, police enforcement in construction zones is rare here — especially if only the survey crew is working. It can be pretty scarey, when you have to set up in the middle of a busy highway.
Let me give you an example. Remember when Walmart used an alarm in Electronics that went off every time anyone entered or left? It was a high pitch tone. Thus I could not shop there. I called Corp back when the higher ups actually cared about customers concerns and listened to customers. I explained what they were doing & the alarms were removed. I didn't have to say I'm going to sue rather I explained to the then VP of Loss Control what they did to people. Watch people in places like Lowes and Home Depot where alarms and paging tones are going off. Watch them become more and more agitated although they may not know why.
I understand the safety issues for construction crews. In Tennessee they usually use considerable precautions especially cops in construction zones from multiple land closures to concrete barriers. Then they went to another extreme and created a Move Over Law. Meaning if Joe Patrolman was running a speed trap with his buddies and had a car pulled over on the shoulder by law you have to move left. Try that in a two mile stretch where they are running a trap and persons are jockeying for the proper lane for a major interstate junction. What would have been a better idea? Approaching the offending vehicle from the passenger side. Some cops have caught on. Others still stick their butts out in traffic.
I can show you something else about sound few persons know. We've all heard the kids in cars with cranked up sound systems you hear the bass long before the other frequencies. The bass frequencies can not be stopped. Hearing protection won't stop it because it penetrates the skull which is part of your hearing which is one reason those cannons are a danger. An Audiologist doing an extensive hearing test will test that portion of your hearing. Try it next time you hear a car like that. Stop up your ears as tight as you can. You'll still hear it and feel it.