The most commonly cited initiation tactic for the "Bloods" gang is called "the car bump tactic," wherein an initiate bumps a car in order to get the driver to stop, opening up the opportunity for a robbery. Another possible initiation is to call the police with reports of minor disturbances with the intent of pulling off more deadly attacks.
According to Snopes.com, some of the reports on the process of initiating into the "Bloods" are myths that date back to the 1980s, when it was claimed by the media that the Hell's Angels were initiating prospects by luring oncoming drivers into flashing their lights, which is considered an insult and therefore justification for an attack.
The main initiation attributed to the "Bloods" along with the "Crips," the "Black Gorillas" and "MS-13," involves prospective gang members bumping the rear of another car to encourage the driver to stop and get out. At this point, the other driver is purportedly robbed, killed or kidnapped.
Yet another alleged gang initiation gives young prospective members a choice between eating dog feces or stabbing another young person in the leg in order to rob them.