highway systems
Interstate travel routes
Highway systems are networks of major roads designed for long-distance travel between cities and regions.
A national highway system connects population centers across a country, while state or regional systems serve smaller areas.
The term often refers specifically to controlled-access expressways with limited entry points: The interstate highway system transformed American commerce and travel patterns.
- asphaltPetroleum-based paving material
- overpassBridge spanning a road
- roadbedFoundation beneath railway tracks
- concreteSolid building mixture
- traffic flowMovement of vehicles
rush hour · interchange · speed limits · cloverleaf · wildlife corridors · urban sprawl · open road · civil engineering · culvert · smart sensors · toll plazas · guardrail · rumble strips · exit ramp · habitat fragmentation · crash barriers · expressway · noise pollution
- infrastructurehighways, road construction, railway expansion, power grid, roads
- transportationcar, bus, airplane, train, plane
- land usezoning ordinances, suburban sprawl, land management, arable land, industrial
- state enterprisesstate enterprises, Amtrak, BBC, public enterprises, USPS
- megastructuresDyson sphere, space habitat, space elevator, arcologies, arcology
highway systemsresidential streets
Roads lined with homes
side streets · back roads · city streets · footpaths · cul-de-sacs
highway systemsrail networks
Connected train route systems
railway systems · waterways · canal systems · shipping lanes · subway systems
highway systemswilderness trails
Paths through undeveloped natural areas
wilderness · footpaths · undeveloped land · hiking trails · bridle paths