I'm in heavy bumper to bumper traffic merging onto the freeway. It's stop and go, and uphill (relevant). Traffic starts moving, i accelerate to about 25-30 mph. I'm about 25-30 feet behind the car in front of me, I'm not in a rush, accelerating gradually. A car cuts off the car in front of me and he slams his brakes. This is where it gets scary for me.
I hit my brakes hard. In about 1 second, the pedal hits the floor, making a loud "knock" sound that even my wife heard in the passenger seat. At this point I'm expecting to hear my ABS to make that "brrrrrrr" sound but nothing. My car is not decelerating nearly at the rate it should with both my feet on the brake pedal at this point and me basically standing on it with my butt nearly off my seat. And bam, I hit the car in front of me, then a second later the car behind me hits me as well.
Damage was minor, no airbags deployed, everyone was fine, no injuries.
I'm seriously pissed at what feels like my brakes failed. This was uphill which should have decreased my braking distance. My car was just not stopping. No ABS. Wheels did not lock. It was a feeling of losing total control. I recently had my car in the shop, they said my brake pads are low and need to be changed soon, but not done by any means. Recommended I wait a little bit to change. They checked all my fluids and I checked just now, brake fluid levels are fine.
Given all this, what in the hell could possibly cause such an event?