highway design
Freeway planning discipline
Highway design is the engineering discipline concerned with planning and constructing roads for motor vehicle traffic.
It encompasses route selection, lane configuration, gradient, curvature, drainage, and safety features like guardrails and signage.
Good highway design balances traffic capacity, driver safety, construction costs, and environmental impact: The highway design called for gentle curves to maintain speeds through the mountain pass.
- traffic signalsLights controlling vehicle movement
- guardrailsProtective edge barriers
- asphaltPetroleum-based paving material
- curvatureDeviation from flatness
- superelevationRoad surface banking angle
grade · roundabouts · noise pollution · cross-section · wildlife corridors · concrete · aggregate · turning radius · drainage systems · speed limits · lane markings · crash barriers · jersey barrier · habitat preservation · rumble strips · median · road shoulders · binder