Originally Posted by STEvil
The lights and sirens are a safety factor, if you are an officer and you are operating a motor vehicle at beyond "lawful" limits you should have one or both active to make it clear to the public you are in a hurry.
The lack of a law to enforce their use when they should be necessary (note there could be leniency or other as "word of law, letter of law" is a thing) is just poor law making as it is often easier to have a poor rule/law than to enforce a good one (i'm in a mud racing club, we run into poor rules all the time that dont get changed because its harder to enforce a good rule)..
Yes, I realize some people wont notice even with lights and sirens, but thats a strawman argument. Those people should probably not have licenses.
Now, that said, most states do actually require officers to operate their vehicle in a safe manner whether on call or not. If they are not operating it in a safe manner, then they are of course subject to reprimand. The lights and sirens are not specifically written into the law all the time, but this is part of the "word of the law, letter of the law" which allows interpretation by legal authorities and internal reprimand rather than (possibly) more effective enforcement.
Really what i'm trying to get at is that you can usually tell when someone is being unsafe, though there are countless examples on youtube of people raging at other people for nothing if you want to strawman that..
I see what you're getting at but you're arguing your opinion of what should be law (Light/Siren = Safety = "Operate their vehicle in a safe manner") and equating it with the law (Therefore they are required to use both A=B=C).
Regardless of your opinion, as I previously stated, very few states strictly require LEO to do this and there are circumstances where you absolutely do not want any form of audio or visual alarm - such as going towards a domestic disturbance call, or investigating a situation such as a drug deal, which might escalate the situation or lose a valuable opportunity.
It's also frowned upon to use the sirens past ten unless you're on the interstate in most areas - you have to deal with a lot of complaints that way.