Sentence:  He can ( 1 ) point his car resolutely at the invading fender and <WSD>force</WSD> the other driver back into Lane A ; ( 2 ) slow down and permit the ambivalent driver to change lanes ; or ( 3 ) alternately accelerate and decelerate , thus keeping the first driver guessing as to his intentions , thereby making a fascinating sport of the whole affair . 
Meaning of the word marked with <WSD> tags:  to cause to do through pressure or necessity, by physical, moral or intellectual means :"She forced him to take a job in the city"