Air bag: A bag which inflates immediately during collision, thereby preventing the driver or the passenger’s head, chest from slamming into the dash board, windshield or steering wheel. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostAdjustable shock absorber Next PostAir cleaner