In November 2000, Florida voters approved an amendment to Florida's constitution mandating the state establish a system of high speed trains exceeding 120 mph to link its five largest urban areas, with construction to commence by November 1, 2003. The Florida Legislature enacted the Florida High Speed Rail Authority Act in March 2001, creating the Florida High Speed Rail Authority (HSRA). The HSRA established a Vision Plan for the system which proposed construction in several phases. Preliminary assessments and environmental studies were begun to develop an initial phase of the system between Orlando and Tampa.