The film, 'Bullitt', is from the murder mystery genre. This is shown through the choice of images, typography, cuts, sound and camera angles used in the opening titles.
The typography used in these opening titles is typical of crime genre films, which covers murder mysteries. The font is bold and square, which is see a lot in opening title sequences in American crime films. It connotes importance and dominance, which is why it is used when police are investigating crimes in films.
Finally, the background music used in these opening titles is soft jazz music, very similar to the iconic music from the film, 'The Pink Panther', which is associated with investigations. Because of this association, the audience assumes that the film involves the investigation of a crime of some sort.