This paper focuses on traffic management in the Philippine City of Vigan. Current traffic conditions are characterized and the Vigan Master Plan's transportation and traffic components are discussed thoroughly. Schemes consistent with the preservation of the city's heritage were examined, and suitable programs were recommended for implementation. The public transportation system is assessed in the light of environmental concerns pertaining to emissions and noise. The role of institutions like the local government and the academe (i.e., University of Northern Philippines) is also discussed especially in the formulation and implementation of traffic management schemes. Such is required to come up with effective traffic programs that would ensure sustainability of growth for Vigan without sacrificing its legacy as a World Heritage Site.