Until that time, there was a lack of information on urban travel that could be used for the planning of highway facilities. In fact, no comprehensive survey methods had been developed that could provide the required information.

Until that time, there was a lack of information on urban travel that could be used for the planning of highway facilities.
③それ以前には、道路施設の計画に活用できる都市交通（に関する）情報(データ)が乏しかった。

In fact, no comprehensive survey methods had been developed that could provide the required information.
④実際に、必要な情報を得るための包括的な調査方法が確立していなかった。

Because of the complex nature of urban street systems and the shifting of travel from route to route, traffic volumes were not a satisfactory guide to needed improvements. A study of the origins and destinations of trips and the basic factors affecting travel was needed (Holmes and Lynch, 1957).

Because of the complex nature of urban street systems and the shifting of travel from route to route, traffic volumes were not a satisfactory guide to needed improvements.
⑤都市の道路網(体系)の複雑さと、交通の路線間の移動があったため、(道路)交通量だけでは必要な改善を判断するには不十分であった。

A study of the origins and destinations of trips and the basic factors affecting travel was needed (Holmes and Lynch, 1957).
⑥分布交通(OD)と、移動に影響を与える基本的な要因の研究が求められていた。(Holmes and Lynch, 1957)