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SUMMARY: This document denies a petition for rulemaking and defect determinations submitted by Mr. James E. Hofferberth to prevent the installation by States of seat belts in large school buses and declare school buses equipped with seat belts to be safety defects. After reviewing the petition, NHTSA concludes that there is no justification for changing its longstanding position that States may require seat belts at passenger seating positions in large public school buses. We also conclude that there is no basis to declare that school buses equipped with seat belts have safety-related defects, or to recall existing school buses installed with seat belts. The petitioner did not provide any data that NHTSA has not considered in the past.