What would cause car jerking like transmission jerks .

What is your question?

while driving if I turn on lights,turn signal,flashers brakes,the car jerks real bad feels like transmission jerks?Then in the warning panel airbag lights up? Usually it is at least two jerks with each thing I press? feels like car will stop ,then goes till I press a turn signal or lights? I am afraid to drive like this in case it does stop,or hurts Transmission?