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Pages 86-89

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From page 86...
... 86 S E C T I O N 8 This section presents the conclusions and recommendations of the research. 8.1 Conclusions The conclusions of the research are presented below.
From page 87...
... 87 • Quantitative relationships between crash frequency or severity and roadway geometric design criteria have been established in the HSM (12) or previous research for lane width, shoulder width, and horizontal curve radius.
From page 88...
... 88 intersection, ramp, or driveway is present) , and cross slope.
From page 89...
... 89 criteria, with flexibility to adapt roadway cross sections to the specific needs of each corridor, along with appropriate intersection design and access management criteria, would appear to be of greater importance to design of urban and suburban arterials than the administrative controls provided by the 13 controlling criteria and the design exception process. A possible exception to this recommendation is for urban and suburban arterials with design speeds over 45 mph; such arterials are designed more like rural highways, and the same controlling criteria as for rural two-lane highways, rural multilane highways, and rural and urban freeways might be applied.

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