On the Peninsula BART riders will have to pay to park at three stations for the first time since 2004.
A new $1 fee went into effect Monday at the Millbrae, San Bruno and South San Francisco stations.
In addition, parking fees will increase by $1 at the Daly City and Colma stations.
BART estimates the new fees will bring in an additional $800,000 in revenue through the end of June.