During this period, the BPR sponsored a study, which was conducted by Robert Mitchell and Chester Rapkin, on traffic generation at Columbia University. The study was directed at improving the understanding of the relationship between travel and land use through empirical methods, and it included both persons and goods movement.

During this period, the BPR sponsored a study, which was conducted by Robert Mitchell and Chester Rapkin, on traffic generation at Columbia University.
①この期間、道路調査委員会(HRB)は、コロンビア大学で、ロバート・ミッチェルとチェスターラプキンらの交通発生（生成）に関する研究を支援した。

The study was directed at improving the understanding of the relationship between travel and land use through empirical methods, and it included both persons and goods movement.
②この研究では、実際の経験を通した交通と土地利用の関係に対する理解を深めることを目的とし、人間と物資の両方の流れ(移動)を調査した(含めていた)。

Mitchell and Rapkin (1954) state as a major premise of their study: Despite the considerable amount of attention given in various countries to movement between place of residence and place of work, the subject has not been given the special emphasis suggested here; That is, to view trips between home and workplace as a "system of movement," changes in which may be related to land use change and to other changes in related systems of urban action or in the social structure. (p. 65)

Mitchell and Rapkin (1954) state as a major premise of their study:
③ミシェルとラプキンは彼らの研究の主要な前提を以下のように定めた。

Despite the considerable amount of attention given in various countries to movement between place of residence and place of work, the subject has not been given the special emphasis suggested here;
④居住地と勤務地間の移動について、多くの州が非常に注目しているにもかかわらず、ここで示す問題（主題）は特に強調されなかった。

That is, to view trips between home and workplace as a "system of movement," changes in which may be related to land use change and to other changes in related systems of urban action or in the social structure. (p. 65)
⑤つまり、自宅から職場への移動を｢移動のシステム｣と見なすために、土地利用や、都市活動の関連システム、社会構造などの変化と関連した変化があった。(p.65)