Continuous buzzers and ignition interlocks annoy many consumers to the point of their disabling or circumventing the systems. As a result of the strong negative consumer reaction, Congress adopted a provision, as part of the Motor Vehicle and School Bus Safety Amendments of 1974, prohibiting NHTSA from prescribing a motor vehicle safety standard that required, or permitted as a compliance option, seat belt interlocks or audible seat belt warnings lasting longer than 8seconds. In response, NHTSA amended FMVSS No. 208 in 1974 to require that only the driver seating position be equipped with a seat belt warning system providing a visual and audible warning, with the audible warning not lasting longer than 8 seconds.