With all due respect, sir, many (most?) here do not recommend asking a LEO for their "interpertation" of the law. The actual statute/ordinance/regulation is IMHO best explained by an attorney or from having been decided in a court of record.
Too often an officer or even an entire department has taken a position that proved to be contary to the law. To simply accept such an opinion is to forfeit a right and further compound the problem.
I an not attacking your friend, but am speaking to the point that there may be other sources of information that will be much more valid.