It was at this time that the San Francisco Bay area began planning for a regional rapid transit system. In 1956, the Rapid Transit Commission proposed a 123-mile system in a five-county area. As a result of this study, the Bay Area Rapid Transit District (BARTD) was formed within the five counties.

It was at this time that the San Francisco Bay area began planning for a regional rapid transit system.
①サンフランシスコ海岸地域が、地域の高速鉄道システムを計画し始めたのも、この時期であった。

In 1956, the Rapid Transit Commission proposed a 123-mile system in a five-county area.
②1956年、高速鉄道委員会が5つの郡に123マイルシステムを提案した。

As a result of this study, the Bay Area Rapid Transit District (BARTD) was formed within the five counties.
③この調査結果、5つの郡に、ベイエリア高速鉄道地域（BARTD）が形成された。

The BARTD completed the planning for the transit system and conducted preliminary engineering and financial studies. In November 1962, the voters approved a bond issue to build a three-county, 75-mile system, exclusively using local funds (Homburger, 1967).

The BARTD completed the planning for the transit system and conducted preliminary engineering and financial studies.
④ベイエリア高速鉄道地域（BARTD）は、鉄道システムの計画を完成させ、予備設計(試運転)と財政分析を行なった。

In November 1962, the voters approved a bond issue to build a three-county, 75-mile system, exclusively using local funds (Homburger, 1967).
⑤1962年の11月、有権者は、3郡、75マイルシステムを構築するため、地方財源だけの公債発行を承認した。（Homburger, 1967）