Abstract: A retractor (20) for a vehicle safety restraint for use in a rear vehicle seat comprising: seat belt webbing wound on a rotatable spool (2), and a vehicle sensor having an inertial sensor mass (5) supported in a housing and movable relative thereto when vehicle acceleration or deceleration exceeds a predetermined magnitude; a vehicle sensor pawl (7) arranged to be moved, in response to movement of the mass, from a position in which the spool is freely rotatable into a spool locking position; a seat back latching condition detector, adapted to be located in a latch for the rear seat back, means (10) connecting the latching condition detector to the vehicle sensing pawl, the connecting means being operable to move the pawl (7) into the spool locking position when a seat back deatched condition is detected.

Abstract: An occupant position measuring system (10) comprising: a transmitter for generating a pulse modulated transmitter signal; a receiver for receiving a reflection of the transmitter signal, the receiver being characterized as having a relatively low Q factor; a controller, responsive to the receipt of the reflected signal and for generating an indication of the distance between an occupant the transmitter.