by michael769 » Tue Jan 07, 2014 10:38 am
Police are accepted as expert witnesses in these matters so their opinions are admissible in court, and carry considerable weight, especially if there are 2 officers to provide corroboration.
That is not to say that such prosecutions are a slam dunk. The defense can seek to rebut their officers opinion, and evidence. For example by pressing the officer under cross examination to justify their opinion.
It is hard to defend (less so if it is the uncorroborated opinion of a single officer), especially if the defendant is unable to offer any rebuttal evidence, and it comes down to the copper says it was I say it wasn't, but acquittals do happen. IME the acquittals tend to arise where there are issues with the quality of the evidence (for example inconsistencies in officers accounts) rather than due to an evaluation of the facts.
It is perhaps worth considering the demographic of a typical magistrate, and what you would expect him to do if 2 coppers described undertaking of careless driving with reference to the highway code rule "prohibiting" it? At the end of the day in court you can expect to be judged against the rules set out in the highway code, combined with the magistrates understanding of what the DSA would expect on a driving test.
Minds are like parachutes - they only function when open
Thomas Robert Dewar(1864-1930)