MOCAŠ
MB Enthusiast
You have not answered my question...
***, I think my previous post adequately addressed all the points you raised, but since you have asked for clarification: in the most generic terms, it is in the police's interest (and that of the public) to both prevent crimes where possible and to apprehend those who are intent on committing them repeatedly, so that they will be penalised and thus less like to re-offend. If criminals are helped to escape capture - as distinct from being discouraged from committing crimes in the first place - they then have further opportunities to commit further crimes.
In order to gather evidence of criminal activity, police often have to catch criminals in the act. With a gang of bank robbers, for instance, it may make more sense for the police to keep them under surveillence while they plan and begin to execute their crime before intervening, rather than intercepting them too early when all that could be proved is an intent to commit a crime.
The same applies to a speeding motorist - if they can be caught while speeding, they can be convicted and penalised; or in some cases, offered an awareness course instead; or perhaps let off with a stiff warning, as appropriate. However, if they slip by undetected, only to continue speeding later on, then no greater good has been served.
If, on the other hand, that warning flash acts as a genuine wake-up call and they continue to observe speed limits thereafter, then yes - it has served a valid purpose. However, I am not naive enough to believe that when flashing a motorist the intent is that they should never speed again; it is very much a localised measure.
There's a degree of truth in your final point about criminals trying to keep their heads below the parapet, but I don't believe it is a given. There are times when some will go out of their way to avoid detection, and in some cases they can even unintentionally give themselves away as a result, but by and large, people become complacent and lazy, and it often the case that the detection of some relatively minor misdemeanour can open the floodgates on a series of other discoveries.