Is that he's just a cop, and the game even makes fun of this... Why? He goes around chasing sirens all day and not just game play, story wise (movies, comics, etc) too... He leaves a lunch date with Mary Jane because he hears sirens; I don't get it..
In the beginning, when he first got his powers I could understand this but after finishing his first big city threatening fight or first super villain fight, all of this cop radio stuff should've stopped. If you're a superhero-vigilante, you're leagues above a cop, so why do cop work? Why not save your energy for the big fights? He's always complaining about not having a life or time yet he spends 23 hours of his day doing the cops job.
And about that... If it wasn't bad enough that Peter Parker is already directly or indirectly responsible for creating half of his super villains, doesn't he know that doing the cops job only makes cops lazier and villains more dangerous because of him?
J. Jonah Jameson was right, Spider-Man is a menace!