Jo Sinfield, Director and Quality Manager, explains that by implementing ISO 9001, Warnerbus has become more efficient and effective in numerous ways. Auditing is performed monthly and continues to highlight opportunities for process improvements. Non-conformities and corrective actions are religiously logged, enabling Warnerbus to learn from mistakes and put in place initiatives to prevent recurrences of problems. Now that the company monitors each stage of the vehicle build, preventative action means that warranty costs have substantially reduced