Expect the Unexpected from Police Vehicles
I used to smile when I saw closely spaced traffic, a large gap, a police vehicle, another large gap and finally more closely spaced traffic. Everyone is afraid of the cop I thought. Having spent 25 years driving a marked police vehicle I recognize both that I rarely see this anymore and that it was a wise thing to do. Police vehicles often make unexpected starts, stops and turns.

Does a person being investigated for committing an offence under the Motor Vehicle Act have to provide their full name and address to the officer who demands it? It is an offence under the Criminal Code of Canada to obstruct an officer in the execution of their duty. A jaywalker in North Vancouver learned this the hard way.
I just a call from a trucker this morning whose friend (also a truck driver) had her log book and ferry receipts taken by an officer at a road block who then refused to give them back to her. Is this a standard policy from your recollection?