Class 1 (off-road Racing)
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Class 1 may refer to: *
Class I railroad Railroad classes are the system by which Rail freight transport, freight railroads are designated in the United States. Railroads are assigned to Class I, II or III according to annual revenue criteria originally set by the Surface Transportatio ...
, a term used in North American railroad size classification *
Class 1 Touring Cars Class 1 Touring Cars refers to two generations of prototype silhouette-style touring car regulations employed by the FIA. First generation (1993–1996) The first generation was a production-based formula introduced in 1993 along with Class 2 T ...
, an FIA classification for cars in motor racing *
Class 1 World Powerboat Championship The UIM Class 1 World Powerboat Championship (also known as Class 1) is an international motorboat racing competition for powerboats organized by the Union Internationale Motonautique (UIM). It is the premier class of offshore powerboat racing i ...
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Classes of United States senators The 100 seats in the United States Senate are divided into three classes for the purpose of determining which seats will be up for election in any two-year cycle, with only one class being up for election at a time. With senators being elected ...
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SCORE Class 1 SCORE Class 1 is an open-wheel unlimited-class that competes in the SCORE off-road race series including the Baja 1000, Baja 500, San Felipe 250 and the SCORE Desert Challenge. Class 1 is defined as an unlimited four-wheel single and two-seat veh ...
, unlimited off-road racing buggies * The first class in terms of hiking difficulty in the
Yosemite Decimal System The Yosemite Decimal System (YDS) is a five-part Grade (climbing), grading system used for rating the difficulty of rock climbing climbing routes, routes in the United States and Canada. It was first devised by members of the Sierra Club in Southe ...
* A contribution class in the National Insurance system in the UK * An IEC protection class in the electrical appliance manufacturing industry * A class in laser safety * HAZMAT Class 1 Explosives


See also

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Class I (disambiguation) Class I may refer to: *Class I antiarrhythmic *Appliance classes, Class I electrical appliance, a device constructed according to electrical grounding specifications in the IEC 60536-2 standard *Class I bacteriocin, a type of toxin produced by some ...
* Class 01 (disambiguation) * First class (disambiguation) *
NSB El 1 NSB El 1 is the first electric locomotive series used by the Norwegian State Railways, from 1922 until 1973. Twenty-four engines were delivered from ASEA and Thune, twenty-two in 1922 and two in 1930. Based on the German DB E 71 and Swedish SJ Oc ...
, an electric locomotive of Norway * NSB Di 1, a diesel locomotive of Norway *
Type 1 (disambiguation) Type 1 or Type I or ''variant'', may refer to: Health *Diabetes mellitus type 1 (also known as "Type 1 Diabetes"), insulin-dependent diabetes * Type I female genital mutilation * Type 1 personality *Type I hypersensitivity (or immediate hypersensit ...
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