The committee was composed of experts in a wide range of fields, representing federal, state, and city governments, transit, and other interests. It developed a guidebook, Better Transportation for Your City (National Committee, 1958-1959), designed to help local officials establish an orderly program of urban transportation planning. It was supplemented by a series of seventeen procedure manuals describing techniques for planning highway, transit, and terminal improvements.

The committee was composed of experts in a wide range of fields, representing federal, state, and city governments, transit, and other interests.
①委員会は、連邦・州・市の各政府機関、公共交通機関、その他の関係団体を代表する、幅広い分野の専門家によって構成されていた。
※「, representing federal」の「,」の使い方に着目。単純化すると、「experts representing federal」。

It developed a guidebook, Better Transportation for Your City (National Committee, 1958-1959), designed to help local officials establish an orderly program of urban transportation planning.
②委員会は、地方自治体の職員が都市交通計画の計画的な施策を策定できるよう支援することを目的として、指針書『地域に合ったより良い交通（Better Transportation for Your City）』（National Committee, 1958–1959）を作成した。

It was supplemented by a series of seventeen procedure manuals describing techniques for planning highway, transit, and terminal improvements.
③この指針書は、道路、公共交通、ターミナルの整備計画に関する技法を説明した、全17巻の手引書（便覧）シリーズによって補完された。

The guidebook and manuals received national recognition. Even though the guidebook was primarily intended for the attention of local officials, it stressed the need for cooperative action, full communication between professionals and decision makers, and the development of transportation systems in keeping with the broad objectives of community development. It provided, for the first time, fully documented procedures for systematic transportation planning.

The guidebook and manuals received national recognition.
④指針書と手引書（便覧）シリーズは、、全国に認知された。

Even though the guidebook was primarily intended for the attention of local officials, it stressed the need for cooperative action, full communication between professionals and decision makers, and the development of transportation systems in keeping with the broad objectives of community development.
⑤たとえこの指針書が主に地方自治体の職員向けてあった（対象としていた）としても、この指針書は、協力的な取り組み（行動）、専門家と意思決定者間の十分な意思疎通、そして地域開発の広範な目標と整合する形での交通システムの構築（整備）の必要性を強調していた。

It provided, for the first time, fully documented procedures for systematic transportation planning.
⑥（そして）それは、体系的な交通計画のために、完全に文書化された手順を初めて提供した。