An apparatus is disclosed for indicating the state of motion of a subject vehicle
to a driver of a following vehicle, by means of an array of lamps (2, 10-21)
on the subject vehicle. The apparatus is adapted to indicate the presence of the
array of lamps on the subject vehicle when the lamps are not actively indicating
the state of motion of the subject vehicle, with the presence of the array realized
by, preferably, secondary warning lamps adjacently located with the array and arranged
to differentiate the array in terms of its functionality and operational capabilities
from existing arrays, as exemplified in FIG. 2.