A vehicle measurement system instrumentation structure, comprising: a base unit; a camera support structure affixed to said base unit; a pair of camera modules (104a, 104b) secured in a laterally spaced arrangement to said camera support structure, each of said camera modules (104a, 104b) including at least one camera aligned such that associated fields of view are oriented in a forward direction towards a vehicle position within a vehicle service area, generally transverse to said laterally spaced arrangement of said camera modules (104a, 104b); a processing system operatively coupled to said cameras to receive data there from, said processing system having a processor configured with a set of instructions to evaluate data received from said cameras to determine a set of measurements associated with a vehicle within said associated fields of view, said set of measurements including at least a spatial relationship between said camera support structure and said vehicle; and at least one vehicle calibration assistance structure carried by said camera support structure, said vehicle calibration assistance structure being configured to facilitate an alignment or calibration of a safety system component of a vehicle; characterized in that said at least one vehicle calibration assistance structure includes at least one optical projection system (500, 502) carried by said camera support structure; that said optical projection system includes at least one optical projector and a mounting structure having a set of motorized gimbals configured for rotational motion about three orthogonal axes; and that said processing system is operatively coupled to said at least one optical system (500, 502) to activate said at least one optical projector to project a visible indicia onto a surface in proximity to said vehicle measurement system instrumentation structure, and to control an orientation of a projection axis for said at least one optical projector by selectively driving said set of motorized gimbals. a base unit; a camera support structure affixed to said base unit; a pair of camera modules (104a, 104b) secured in a laterally spaced arrangement to said camera support structure, each of said camera modules (104a, 104b) including at least one camera aligned such that associated fields of view are oriented in a forward direction towards a vehicle position within a vehicle service area, generally transverse to said laterally spaced arrangement of said camera modules (104a, 104b); a processing system operatively coupled to said cameras to receive data there from, said processing system having a processor configured with a set of instructions to evaluate data received from said cameras to determine a set of measurements associated with a vehicle within said associated fields of view, said set of measurements including at least a spatial relationship between said camera support structure and said vehicle; and at least one vehicle calibration assistance structure carried by said camera support structure, said vehicle calibration assistance structure being configured to facilitate an alignment or calibration of a safety system component of a vehicle; characterized in that said at least one vehicle calibration assistance structure includes at least one optical projection system (500, 502) carried by said camera support structure; that said optical projection system includes at least one optical projector and a mounting structure having a set of motorized gimbals configured for rotational motion about three orthogonal axes; and that said processing system is operatively coupled to said at least one optical system (500, 502) to activate said at least one optical projector to project a visible indicia onto a surface in proximity to said vehicle measurement system instrumentation structure, and to control an orientation of a projection axis for said at least one optical projector by selectively driving said set of motorized gimbals.