A nomothetic assessment of the drive-by shooting in inter-barrio gang violence was conducted. Available data on drive-by shootings were organized using the model of behavioral assessment suggested by Kanfer and Saslow (1969). The model included seven areas of analysis: initial assessment, clarification of the problem, motivation, development, self-control, social relationships, and socio-cultural-physical environment. The assessment indicated that: drive-by shooting, defined as the chain of behaviors in which the perpetrator used a firearm from a moving vehicle to inflict injury or death on one or more victims or to damage property, was an excessive behavior which most community members hoped to see entirely extinguished; depending upon the antecendent stimuli, drive-by shootings were categorized as "provoked" or "unprovoked"; social reinforcement for the problem behavior came from such sources as peer approval and the amount and type of news media coverage devoted to gang violence; self-control was exercised in gauging the severity of a motorized attack; although an attack was well-planned, the actual execution of the plan was the source of some anxiety reduced through the use of psychoactive substances; and the wider availability of both cars and guns made the drive-by shooting a more likely form of violence than the face-to-face street fighting common in the past. (NQA)