I agree that Oro Valley Police needs to do their job in keeping speed in check. But if it is being done with police hiding behind bushes and radar guns, that is entrapment, and roadways that are being patrolled (or controlled) with radar have to be posted as such.
And as an aside: The entire country knows how over zealous Oro Valley police are. Even cross country moving van drivers know about that and dread delivering in Oro Valley.
Is that the reputation you want?