reconnaissance biplane Hansa-Brandenburg C.I, a 1916 German 2-seater armed single-engine reconnaissance biplane Kawasaki C-1, an indigenous transport aircraft of the Japanese Air Self-Defense Forces Otto C.I, a 1915 German reconnaissance biplane Rumpler C.I, a 1915 German two-seater single-engine reconnaissance biplane Southern Cross Airport (New Jersey) (FAA LID: C01) Land Routes Circumferential Road 1 or C-1, an arterial road of Manila, Philippines London Buses route C1 Route C1 (Shuto Expressway), the Inner Loop of Tokyo's Shuto Expressway system Claro M. Recto Avenue, a road in Metro Manila, Philippines Massachusetts State Route C1 Land vehicles BMW C1, a cabin scooter Chevrolet Corvette C1, first generation sold from 1953 to 1962, denoted a solid-axle rear-end Citroën C1, a small car Ford C1 platform, the Ford Motor Company's global compact car automobile platform Lit C-1, a prototype cabin motorcycle Nimrod NRA/C1, a 1981 test design racing car Sauber C1, a Sauber sport car Other uses in land transport C-1, the numberplate of the Prime Minister of Australia's official VIP transportation A type of heavy goods vehicle licence A one-way traffic sign in the Vienna Convention on Road Signs and Signals Rail Bavarian C I, an 1847 German steam locomotives class GNR Class C1 (small boiler), a British 4-4-2 steam locomotive class (classified C2 during LNER ownership) GNR Class C1 (large boiler), a British 4-4-2 steam locomotive class LB&SCR C1 class, an 1882 British freight steam locomotive Long Island Rail Road C1, a bilevel railcar built by Tokyu Car Corporation NER Class C1, a British 0-6-0 steam locomotive class PRR C1, an American PRR steam locomotive Finnish Steam Locomotive Class C1 Sea , a C-class submarine of the Royal Navy , a C-class submarine of the United States Navy , a protected cruiser of the United States Navy Type C1 ship, a small cargo vessel built by the United States in large numbers before and during World War II Isaac Peral (C-1), a Spanish submarine Space Cluster 1, also known as Rumba, an ESA satellite Sports C1, a solo canoe discipline including sprint canoe and canoe slalom C1 (classification), a para-cycling classification C1, an abbreviation for Class One offshore powerboat racing 'C1', the top category in Group C sportscar racing, used between 1985 and 1990 C1, the UEFA Champions League (formerly known as the European Cup) in football Serie C1, the third highest football league in Italy until 2008 Other uses C1, an international standard