Abstract: The production of school buses and its safety problems have been wide spread concerned by
public. A new style long-nose school bus was produced by the authors' company according to the new passive
safety regulations for school buses promulgated in China in 2012. Simulations and tests were done for the roof
strength, rollover under the guide of school bus regulations items to evaluate safety performances, such as the
collision forces and the deformations of vehicle structure, and the accelerations and the loads in some parts
of dummies under boundary condition offrontal impact, side impact and rear crash.Based on the simulation
analysis, the design scheme was improved for some crucial load bearing structures, such as seat system,
and energy-absorbing crush zone.The results show that the consistent of simulation with the experimental
results evidences the credibility of simulation analysis; and that the improved school-bus-structure has higher
crashworthiness than before. Therefore, itminimizes the damage to passengers in road accidents, and then,
satisfies passive safety regulation demands.

Key words: school bus, regulations for school