This is a program designed to enhance police legitimacy during encounters with citizens through approaches based on the principles of fair procedure.
Traffic officers conducted roadblocks near bars, restaurants or similar locations, and at highway entrances or exits, approaching drivers randomly and conducting breathalyzer tests for alcohol consumption.
Those roadblocks were conducted at predetermined times and locations to create a funnel effect so that drivers could not avoid them. During the approach, police officers used a specialized script, which included key elements of fair procedure, a brief explanation of the reason for the roadblock, and instructions on how to perform the breathalyzer test.
The objective was to see if the use of a specialized script could increase the driver’s trust in the police, and thus change their opinion regarding drinking and driving.