This PPT of Air bag working principle will be useful to the final year automobile students. If any collisions either in front part of the vehicle or side this bags will exploded by the gas and save the driver & co passengers from accidents. Students who are all interested in this area can concentrate the explosive of this air bags using Fuzzly logic control system or computerized system either in UG level or PG level. Good scope is there in this inter-disciplinary area. Wish you good luck dear students.Regards,Dr.K.Manivannan, Professor, VIT University.