Yes it is.

Non-investigating would be tasks like:

- counting the number of vehicles going by - radar’ing every car to produce a report on how many people are speeding and how much - checking all licence plates for valid registrations to produce a report on what percentage of cars have expired tags on the road.

Yes, it is. If you were investigating a business or building, you would document vehicles coming and going.

No, but accessing and searching the database is.