A hybrid wheel alignment system and methodology use passive targets for a
first pair of wheels (e.g. front wheels) and active sensing heads for
another pair of wheels (e.g. rear wheels). The active sensing heads
combine image sensors for capturing images of the targets with at least
one spatial relationship sensor for sensing a relationship between the
active sensing heads. One or both of the active sensing heads may include
inclinometers or the like, for sensing one or more tilt angles of the
respective sensing head. Data from the active sensing heads may be sent
to a host computer for processing to derive one or more vehicle
measurements, for example, for measurement of parameters useful in wheel
alignment applications.