Transportation

Hyundai Sonata — Overview, History and Key Features Hyundai Sonata Mid-size sedan from Hyundai first introduced in 1985. The Sonata evolved through multiple generations, offered gasoline, hybrid and other variants, and has been important to Hyunda…

Hyundai Tucson A compact crossover SUV from Hyundai, noted for its practical design, multiple powertrains (including hybrid options), and evolution across several generations since the early 2000…

Hyundai Veracruz Mid-size crossover SUV produced by Hyundai from 2006–2015, offering three-row seating, all-wheel drive options and marketed as the company’s largest CUV before being replaced by an…

Iceboat (ice yacht): wind-driven craft for frozen surfaces Iceboat An iceboat is a wind-powered vehicle that glides on metal runners over ice. Used historically for transport and today for racing, it pairs sail rigs with low-friction runners to ac…

Icebreaker (ship): vessels built to operate in ice-covered waters Icebreaker Icebreakers are specialized ships with strengthened hulls and powerful propulsion to navigate and clear ice for navigation, research, and supply in polar and seasonally frozen regi…

Ilford railway station: Elizabeth line commuter station in the London Borough of Redbridge Ilford railway station Ilford railway station in Redbridge serves Ilford on the Elizabeth line and Great Eastern Main Line. Five platforms (three in regular use) handle suburban commuter services to cent…

Ilyushin Il-18 — Soviet long-range turboprop airliner Ilyushin Il-18 The Ilyushin Il-18 is a four-engined Soviet long-range turboprop airliner introduced in 1959. Noted for reliability and long service life, it served Aeroflot and many military oper…

Ilyushin Il-38: Soviet maritime patrol and anti-submarine aircraft Ilyushin Il-38 The Ilyushin Il-38 is a four-engined Soviet-era maritime patrol and anti-submarine aircraft developed from the Il-18 airliner. It served with Soviet, Russian and Indian naval aviat…

Ilyushin Il-62: Soviet long-range narrow-body jet airliner Ilyushin Il-62 The Ilyushin Il-62 is a four-engined Soviet long-range narrow-body jet airliner introduced in the 1960s, noted for its rear-mounted engines, T-tail and long service life with passe…

Ilyushin Il-76: Soviet strategic airlifter (Candid) Ilyushin Il-76 The Ilyushin Il-76 is a Soviet-era four-engine strategic transport aircraft, designed for heavy airlift, austere-field operations and varied military and civil roles. Widely export…

Ilyushin Il-78 (Midas) — Soviet four-engine aerial tanker Ilyushin Il-78 Four-engine Soviet aerial refuelling tanker derived from the Il-76 transport. Employed for probe-and-drogue refuelling, with several variants and modernisation programmes used by R…

Ilyushin Il-86 (NATO: Camber) Ilyushin Il-86 Soviet four-engined wide-body airliner introduced around 1980 for high-capacity routes; used by Aeroflot and later by Russian military for transport and special-purpose variants.

Ilyushin Il-96 A Russian four-engine wide-body airliner developed as a modernized successor to the Il-86, used in limited numbers for long-range passenger, cargo and government transport since th…

Inca road system (Qhapaq Ñan) Inca road system The Inca road system, or Qhapaq Ñan, was a vast pre-Columbian network of roads and trails through the Andes that linked population centers, supported administration, and enabled lo…

Inca rope bridge: design, history, and cultural importance Inca rope bridge Traditional suspension rope bridges built by the Inca using braided plant fibers. Key elements, construction, role in the Qhapaq Ñan road system, and living examples such as annual…

IND Crosstown Line (G) — Brooklyn–Queens crosstown subway IND Crosstown Line The IND Crosstown Line is a Brooklyn–Queens trunk line of the New York City Subway, served only by the G train between Court Square and Church Avenue and shown in lime green on sys…

IND Eighth Avenue Line (New York City Subway) IND Eighth Avenue Line Major trunk line of the IND in Manhattan, opened in 1932. Carries A, C and E services, connects northern and southern Manhattan and extends into Brooklyn and Queens. One of the sys…

Sixth Avenue Line (IND): Manhattan Subway Trunk Beneath Sixth Avenue IND Sixth Avenue Line Overview of the IND Sixth Avenue Line, the Manhattan subway trunk beneath Sixth Avenue: history, services, ridership, and its role as a key Midtown–Lower Manhattan transit corridor…

Inflatable Boat A lightweight boat with air-filled tubes used for recreation, transport, rescue and professional work; available in soft-hulled and rigid-hulled forms with various materials and sa…

Interchange (transportation, information, and exchange) Interchange A meeting point or process where routes, systems, or parties exchange people, goods, data, or ideas. Covers road and rail interchanges, intermodal terminals, data exchange, manufac…

Interchange (road) A road interchange is a grade-separated junction that links two or more roads to allow traffic to flow without direct crossing. Designs balance capacity, land use, safety, and cons…

InterCity (British Rail) InterCity was British Rail’s long-distance express passenger brand, introduced in 1966 and associated with high-speed services, distinctive liveries and trains such as the HST and…

InterCity 125 (British Rail High Speed Train) InterCity 125 The InterCity 125, or HST, is British Rail’s high-speed diesel train introduced in the 1970s. Formed of two power cars and passenger coaches, it reached 125 mph in service and set…

InterCity 225 — British high‑speed electric train InterCity 225 The InterCity 225 is a high‑speed electric passenger train built for the UK’s East Coast Main Line. It pairs Class 91 locomotives with Mark 4 coaches and a Driving Van Trailer for…

Intercity Express (ICE) — Germany’s High-Speed Passenger Trains Intercity Express The Intercity Express (ICE) is Deutsche Bahn's flagship high-speed train family, serving long-distance routes in Germany and neighbouring countries with multiple train types and sp…

International Harvester Scout A compact encyclopedia entry on the International Harvester Scout: its design, development (1960–1980), variants, uses, and legacy as an early American sport-utility/off-road vehic…

Road intersection Intersection (road) A road intersection is where two or more roads meet. This article explains types, control devices (signals and signs), design considerations, safety for pedestrians and cyclists, a…

Interstate 10 (I-10) — major transcontinental east–west highway Interstate 10 Interstate 10 (I-10) is a principal east–west U.S. Interstate running coast to coast from Santa Monica, California, to Jacksonville, Florida, serving eight states and major souther…

Interstate 15 (I-15): major north–south highway from San Diego to the Canada border Interstate 15 Interstate 15 is a principal north–south U.S. Interstate running roughly 1,433 miles from San Diego, California, to the Sweetgrass–Coutts border crossing into Canada, linking deser…

Interstate 15 in California: route, role, and related routes Interstate 15 in California Interstate 15 in California is a major north–south freeway linking San Diego County with the Inland Empire and the Mojave Desert, forming a principal corridor for commuters, freigh…

Interstate 16 (I-16) — Georgia east–west corridor Interstate 16 Interstate 16 (I-16) is an east–west Interstate Highway in Georgia, running about 166.8 miles between Macon and Savannah and serving freight, commuters, and hurricane evacuation ne…

Interstate 17 (I-17) — Phoenix to Flagstaff, Arizona Interstate 17 Interstate 17 is a primary north–south Interstate in Arizona running about 145.76 miles from Phoenix to Flagstaff. It links desert lowlands with high country and serves both commer…

Interstate 182 (I-182) — Washington state connector for the Tri-Cities Interstate 182 Interstate 182 (I-182) is a 15.19-mile auxiliary Interstate in Washington that links I-82 with U.S. Route 12, serving the Tri-Cities area (Richland, Pasco, Kennewick) and regional…

Interstate 19 — Arizona highway between Nogales and Tucson Interstate 19 Interstate 19 is a federal Interstate Highway in Arizona linking the Mexico border at Nogales with Tucson, spanning about 63.35 miles and serving as a key trade and travel corridor…

Interstate 20: Major East–West Highway across the Southern United States Interstate 20 Interstate 20, a 1,539-mile east–west highway crossing Texas, Louisiana, Mississippi, Alabama, Georgia and South Carolina, linking Dallas–Fort Worth to Florence, SC; a vital freigh…

Interstate 22 (I-22) Interstate 22 Interstate 22 is an east–west limited‑access highway linking the Memphis and Birmingham regions along the U.S. 78 corridor, upgraded to improve regional travel, freight movement, a…

Interstate 238 — short East Bay connector in California Interstate 238 A 2.126-mile Interstate in California's East Bay linking I-580 in Castro Valley to I-880 in San Leandro; notable for its unusual three-digit number and role as a commuter and freig…

Interstate 24 (I-24) — Highway linking southern Illinois to East Ridge, Tennessee Interstate 24 Interstate 24 (I-24) is a 316.36-mile (509.13 km) Interstate Highway running southeast from Goreville, Illinois, through western Kentucky to East Ridge (Chattanooga), Tennessee, se…

Interstate 25 (I-25) — Major north–south route through New Mexico, Colorado, and Wyoming Interstate 25 I-25 is a primary north–south Interstate running 1,062.77 miles from Las Cruces, NM to Buffalo, WY, linking key Front Range and high-plains cities across three states.

Interstate 26 (I-26) — Kingsport, Tennessee to Charleston, South Carolina Interstate 26 Interstate 26 (I-26) is a 349-mile Interstate Highway connecting Kingsport, TN, to Charleston, SC, crossing the Appalachian foothills and serving Asheville, Greenville–Spartanburg,…

Interstate 275 (Michigan) I-275 is a controlled-access Interstate western bypass of Detroit, maintained by MDOT. It links I-75 with I-96/I-696 and M-5 near Farmington Hills–Novi; state and federal sources r…

Interstate 278 (I-278) Interstate 278 Interstate 278 is an urban freeway connecting Linden, New Jersey to the Cross Bronx Expressway in the Bronx, carrying locally named segments through Staten Island, Brooklyn and Que…

Interstate 35 (I-35): major north–south corridor from Laredo to Duluth Interstate 35 Interstate 35 is a principal north–south U.S. Interstate, about 1,568 miles long, linking Laredo, Texas at the Mexico border with Duluth, Minnesota and connecting multiple regional…

Interstate 39 (United States) Interstate 39 Interstate 39 is a north–south Interstate Highway running from Normal, Illinois to Rothschild, Wisconsin, serving central Illinois and Wisconsin across about 306 miles and parallel…

Interstate 4 (I‑4) — Florida’s central east–west Interstate Interstate 4 Interstate 4 (I‑4) is an approximately 132‑mile east–west limited‑access highway entirely within Florida, connecting Tampa to Daytona Beach via Orlando. It is a key corridor for co…

Interstate 40 (I-40) — Major east–west U.S. Interstate Interstate 40 Interstate 40 (I-40) is a principal east–west highway running about 2,555 miles from Barstow, California to Wilmington, North Carolina, connecting eight states and many major citie…

Interstate 43 (I-43) — Wisconsin north–south corridor Interstate 43 I-43 is a north–south Interstate Highway running entirely in Wisconsin from Beloit to Green Bay, serving Milwaukee and Lake Michigan cities across about 191.55 miles of highway.

Interstate 45 Interstate 45 is a primary north–south Interstate Highway running about 285 miles entirely within Texas, linking Galveston, Houston, and Dallas and serving heavy freight, commuter,…