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A vehicle testing system includes a wheel plate constructed and arranged to support a vehicle wheel. A linear electromagnetic actuator has a moving magnet mechanically coupled to the wheel plate constructed and arranged to impart a controlled substantially vertical force to the wheel plate. A spring

A vehicle testing system includes a wheel plate constructed and arranged to support a vehicle wheel. A linear electromagnetic actuator has a moving magnet mechanically coupled to the wheel plate constructed and arranged to impart a controlled substantially vertical force to the wheel plate. A spring may be mechanically coupled to the wheel plate to support at least a portion of a static mass of the vehicle.

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What is claimed is: 1. A system for testing a vehicle comprising: a plurality of apparatus, each of the plurality of apparatus comprising: a frame separate from the vehicle and configured to support at least a portion of a wheel of the vehicle; and a linear electromagnetic actuator at least partial

What is claimed is: 1. A system for testing a vehicle comprising: a plurality of apparatus, each of the plurality of apparatus comprising: a frame separate from the vehicle and configured to support at least a portion of a wheel of the vehicle; and a linear electromagnetic actuator at least partially contained within the frame, the linear electromagnetic actuator comprising a movable magnet and being constructed and arranged to impart a controlled substantially vertical force to a vehicle wheel; wherein each of the plurality of apparatus is arranged to independently impart controlled substantially vertical force on a corresponding one of a plurality of supported vehicle wheels; and a plurality of air springs constructed and arranged to provide leveling of a supported vehicle. 2. An apparatus for testing a vehicle comprising: a frame separate from the vehicle and configured to support at least a portion of a wheel of the vehicle; a linear electromagnetic actuator at least partially contained within the frame, the linear electromagnetic actuator comprising a movable magnet and being constructed and arranged to impart a controlled substantially vertical force to a vehicle wheel; and a spring constructed and arranged to support at least a portion of a static mass of at least one vehicle wheel and the vehicle, wherein the spring comprises an air spring which surrounds the linear electromagnetic actuator. 3. An apparatus for testing a vehicle comprising: a frame separate from the vehicle and configured to support at least a portion of a wheel of the vehicle; and a linear electromagnetic actuator at least partially contained within the frame, the linear electromagnetic actuator comprising a bellows and a movable magnet, the linear electromagnetic actuator being constructed and arranged to impart a controlled substantially vertical force to a vehicle wheel. 4. A portable one poster vehicle testing apparatus comprising: a frame separate from the vehicle and configured to support at least a portion of one wheel of the vehicle; and a linear electromagnetic actuator at least partially contained within the frame, the linear electromagnetic actuator comprising a movable magnet and being constructed and arranged to impart a controlled substantially vertical force to the one vehicle wheel.