Population Services International's Mali program has used an unconventional method to reach large groups of migrant populations at risk for HIV/AIDS - a 20-ton truck decorated with the signs, logos and slogans promoting safe sexual behavior. PSI/Mali's interventions complement the Ministry of Health's efforts to reduce the HIV/AIDS infection rate along the migratory axis by targeting bus and truck drivers, their apprentices, roadside vendors, commercial sex workers and youth aged 15-24. The truck has made three tours, spreading HIV/AIDS prevention information to an estimated 16,000 people along the migratory axis of Mali.