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Citroën C1
The Citroën C1 is an A-segment city car produced from 2005 to 2022 alongside the Toyota Aygo and Peugeot 107 at a shared plant in the Czech Republic.
Citroën C3
Citroën C3: French B-segment supermini sold since 2002 as Saxo successor, over 5.6 million units; fourth generation (2023) offers petrol, 48V Hybrid 110 and ë-C3 electric (up to 320 km WLTP) from €14,990, built at Trnava.
Citroën C3 Aircross
The Citroën C3 Aircross is a compact SUV built by French manufacturer Citroën in two generations, the first launched in 2017 and a redesigned version revealed in 2024.
Citroën C4
The Citroën C4 is a compact car built by French manufacturer Citroën since 2020 in its third generation, offered as a hatchback, electric ë-C4, and C4 X fastback.
Citroën C4 Picasso
The Citroën C4 Picasso, also sold as the C4 SpaceTourer, is a compact multi-purpose vehicle produced by Citroën from 2006 to 2020, built exclusively at the Vigo plant in Spain.
Citroën C5
The Citroën C5 is a large family car produced by Citroën from 2001 to 2017, succeeding the Xantia and the last Citroën with hydropneumatic suspension.
Citroën CX
The Citroën CX is an executive car built by French manufacturer Citroën from 1974 to 1991 as successor to the DS, winning European Car of the Year 1975.
Citroën DS
The Citroën DS, also sold as the Citroën D Super, is a French executive car built from 1955 to 1975, with hydropneumatic suspension and about 1.46 million made.
Citroën Dyane
The Citroën Dyane, sold also as the Dyane 6, is a small economy car produced by Citroën from 1967 to 1983, with a hatchback body on 2CV mechanics.
Citroën SM
The Citroën SM is a luxury grand tourer coupé built by Citroën from 1970 to 1975, pairing hydropneumatic suspension with a V6 engine from Maserati.
Citroën Traction Avant
The Citroën Traction Avant, French for "front-wheel drive", is a Citroën car produced from 1934 to 1957, combining monocoque body, front-wheel drive, and independent front suspension.
Citroën Xsara
The Citroën Xsara, also known simply as the Xsara, is a small family car built by Citroën from 1997 to 2006, sharing its platform with the Peugeot 306.
City car
A city car is a small, lightweight passenger car for urban use, known in Europe as an A-segment vehicle and in the United States as a subcompact.
Citybus
Citybus (城巴) is a franchised public bus operator in Hong Kong. Established in 1979, it serves major regions and operates multiple franchises covering North Lantau and the airport.
CityLink (Melbourne)
CityLink is a privately operated tollway in Melbourne, Victoria, opened between 1999 and 2000, linking the Tullamarine, West Gate, and Monash freeways, operated by Transurban.
Class 8 truck
A Class 8 truck is a commercial vehicle with a gross vehicle weight rating of 33,001 pounds or more, the heaviest category in North American truck classification.
Classic Legends (company)
Classic Legends Private Limited is a Pune-based Indian motorcycle manufacturer founded in 2015 and owned by Mahindra & Mahindra, which revived the Jawa, Yezdi, and BSA motorcycle brands.
Click It or Ticket
Click It or Ticket is a national US seat belt enforcement campaign led by NHTSA, which began in North Carolina in 1993 and runs nationally each May.
Clincher tire
A clincher tire is a bicycle tire whose beads lock onto the rim when inflated, holding a separate inner tube; it is the most popular tire type.
Cloverleaf interchange
A cloverleaf interchange is a grade-separated highway interchange in which left turns use loop ramps in all four quadrants, first built in Woodbridge, New Jersey, in 1929.
Clutch derailleur
A clutch derailleur is a bicycle rear derailleur whose cage pivot carries a friction mechanism, most often a roller clutch, that stabilizes the chain, reducing chain slap and dropped chains on rough ground.
Coaster brake
A coaster brake, also called a back-pedal brake or foot brake, is a bicycle rear-hub brake applied by pedaling backward, standard equipment on American-made bicycles within a decade of its 1898 invention.
Cobblestone
A cobblestone is a naturally rounded stone, 64 to 256 mm across in geological terms, formerly used in paving streets and roads and valued for durability.
Code de la route
The Code de la route is the French legal code gathering rules for all public road users, from pedestrians to motorists, covering traffic rules, licensing, vehicle requirements, and sanctions.
Cofiroute
Cofiroute, created in 1970, is a French motorway concession company wholly owned by Vinci, operating 1,111 km of toll motorways including the A10 and A11.
Cold central plant recycling
Cold central plant recycling (CCPR) is a pavement rehabilitation process that mixes reclaimed asphalt pavement with new emulsified or foamed asphalt at a central or mobile plant without heat.
Cold in-place recycling
Cold in-place recycling (CIR) is a pavement rehabilitation method that mills and reuses existing asphalt in place, without heating, as a base for a new surface.
Cold mix asphalt
Cold mix asphalt (CMA) is a bituminous paving mixture of aggregate and liquid binder that is produced, placed, and compacted at ambient air temperature, without heating.
Collision avoidance system
A collision avoidance system, also called a precrash system or forward collision warning, detects imminent crashes and warns the driver or applies automatic emergency braking.
Collision mitigation braking system (trucks)
A collision mitigation braking system (CMBS) on a truck uses radar or cameras to warn drivers and brake automatically when a rear-end crash is imminent.