PTS congratulates Montebello, California’s Montebello Bus Lines on being the industry leader in operator awareness and safe driving practices. PTS has observed high levels of professionalism among its operators, and accordingly, Montebello has the lowest replacement ratio in the country. Montebello was the first ever to retrofit for the S-1 GARD, and has reported zero rollover incidents since its initial installation. Montebello Bus Lines is the third-largest municipal transit agency in Los Angeles County, serving 14 communities.