The transportation corridor approach to the planning of road sites is a mixture of three basic ideas. buying and early, buying more than is needed for initially transport, and buying more land than is needed for transport alone. The advantages are clearly exposed: Lower total costs, better routing and planning, assured of haring the land, discouragement of speculation, and application of "taxing the betterment" principle. A discussion is given of the different costs involved (direct costs, financial costs economic or opportunity costs, holding costs, and indirect costs, mainly intangibles and speculation) and their measurement. A cost-benefit model is described, by which the essential questions of how much to buy and when, can be evaluated. The maximum net tangible benefits can be obtained from this approach by buying land when the costs of delayed acquisition would be rising more rapidly than the costs of early purchase.
Samenvatting