The trip distribution model was a variant of the gravity model, with airline distance as the factor to measure travel friction. Traffic assignment was carried out with speed and distance ratio curves.

The trip distribution model was a variant of the gravity model, with airline distance as the factor to measure travel friction.
⑤トリップ分布モデルは、直線距離を交通抵抗係数とする重力モデルの改良版であった。

Traffic assignment was carried out with speed and distance ratio curves.
⑥交通量配分は、速度-距離比曲線によって求められた。

Much of the work was done by hand, with the aid of tabulating machines for some of the calculations. Benefit-cost ratios were used to evaluate the major elements of the expressway network (Detroit Metropolitan Area Traffic Study, 1955-1956; Silver and Stowers, 1964; Creighton, 1970).

Much of the work was done by hand, with the aid of tabulating machines for some of the calculations.
⑦一部を作表加算機(パンチ カード システム機)で計算しながら、ほとんどの作業は手作業で行われた。

Benefit-cost ratios were used to evaluate the major elements of the expressway network (Detroit Metropolitan Area Traffic Study, 1955-1956; Silver and Stowers, 1964; Creighton, 1970).
⑧費用-便益比は、高速道路網の重要な要素(項目)を評価するために使われた(Detroit Metropolitan Area Traffic Study, 1955-1956; Silver and Stowers, 1964; Creighton, 1970)。