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Unformatted text preview: -Expected traffic volume and vehicle mix Average Daily Traffic (ADT) Design Hourly Volume (DHV) DHV = k%(ADT) -Design speed Minimum design speed = f(ADT, DHV, roadway classification, and terrain) -Design vehicle -Topography of the area in which the highway will be located -Earthwork and the amount of cuts and fills required 2 -Level of service to be provided -Available funds -Safety -Social and environmental factors -Connection to local city streets -Right-of-way acquisition -Coordination of the highway system and other transportation systems -Adequate provision for pedestrians Roadway Cross-Section Elements: Principal Elements: -Travel lanes -Shoulders -Medians Marginal Elements: -Roadside barriers -Curbs -Gutters -Guardrails --Sidewalks --Cross slopes --Side slopes --Right-of-way...
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- Spring '11