I was driving and merging from the local lanes on maryland i-270 sb to the main lanes. in order to move slowly from one lane to another, i applied the brakes to slow down and move to the lane on my left. when i applied the brake, i heard a strange sound and the vehicle jerked violently. the vehicle failed to decelerate, therefore i attempted to re-apply the brakes once more. at this point, the brakes did not seem to be working and the vehicle continued to accelerate beyond my control. i was unable to control the speed using the brakes and the vehicle hit several cars to my left and right. afterwards, my vehicle hit a large tractor trailer at which point the vehicle finally came to a stop. throughout all of this, my airbags did not deploy at all. my vehicle has been declared a total loss due to the damages by my insurance, liberty mutual. *tr