I was traveling on an interstate going home from work. My speed was approximately 65mph. I noticed traffic slowing up ahead. I began to drop my speed (cost down), as I was approaching the traffic the car in front of me was applying their brakes; I had already began to apply mine. I was applying more pressure to my brakes to slow down more as the person in front of me began to slow more quickly. The person in front of me then had to slam their brakes on and I was not able to stop in time to avoid collision with the car in front of me. That driver did not come in contact with any other vehicle. The impact was at approximately 50mph. I was then very quickly hit from behind by the car behind me. The vehicle behind me hit of center and more on the right back corner of my car. My vehicle sustained significant front-end damage; the hood was folded, the grill was gone, the radiator was pushed back. As I looked up after the impact and saw my hood folded I then noticed that my air bag had not gone off. How could the air bag have not gone off in an impact such as that. My safety was compromised by the possibility of hitting the steering wheel or worse such as impacting the windshield if the crash had been worse. I do not remember if my vehicle had side curtain air bags as well. NO air bags deployed. Law enforcement was called by the driver of the car I rear ended as we agreed that she would. The driver of the vehicle that hit me I believe also called 911. Highway Patrol responded alon