2WD Two wheel drive

4wALB Four wheel anti-lock brakes (Honda)

4WD Four wheel drive

4WS Four wheel steer

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The 107 per cent rule is a regulation in Formula 1 which excludes cars which are unable to run at a speed similar to the front-runners.

The rule requires every car to record a qualifying time within 107 per cent of the time recorded by the fastest car. Any car and driver unable to meet this is likely to be excluded from the race.

The 107 per cent rule was introduced in Formula 1 in 1996 and phased out in 2002, but reintroduced for the 2011 season.

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A one-box vehicle has a body shape which can be represented broadly as a single rectangle or box.

See also 2-box, 3-box

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A 3-box design has a shape which can be represented broadly by three rectangles or boxes, marked in red, green and blue on the picture above.

A 3-box is the same as a notchback or saloon style body.

See also 1-box, 2-box.

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A two-box vehicle has a shape which can be represented broadly as two rectangles or boxes, marked in red and green on the picture above.

Estate cars and SUVs are usually two-box designs.

See also 1-box, 3-box.