摘要: |
The challenge for today's highway design community is to find design solutions, as well as operational options, that result in full consideration of road safety and mobility while preserving and protecting the environmental and cultural values affected by transportation facilities. Training and education programs must re-emphasize three critical areas: planners and designers must actively seek public involvement at the earliest possible time and throughout the process; they must develop designs that meet the needs of specific sites rather than attempting to use centralized, standardized solutions, recognizing that different communities may have different values and priorities; and they must consider using the flexibility contained in the current design guidelines--or seek a design exception--instead of automatically opting for the high-end solution by giving priority to capacity over environmental, historic preservation, and neighborhood-protection concerns. In 1997, the Federal Highway Administration (FHWA) joined forces with the American Association of State Highway and Transportation Officials (AASHTO) and other interested groups to design a companion guide to the Green Book, entitled "Flexibility in Highway Design." The purpose of the guide is to provide examples, ideas, and options on which the planners and designers can draw to produce better, more environmentally sensitive projects. |