Caltrain was approached by the Transportation Agency for Monterey County (TAMC) to extend service south of Gilroy into Monterey County. A draft environmental impact report stated the lack of public transportation between Monterey County and the Bay Area has resulted in increased private commuter vehicle traffic. Traffic on US Highway 101 was projected to rise by up to 56% in 2020 compared to 1998 levels, resulting in unstable traffic flow from the Salinas city limits to the Santa Clara County line as a result.