“In some upstate counties there have been two-cop teams – one will be in the squad car down the road and the other stands by the edge of the sidewalk and takes a step the moment a car passes by. He radios ahead that the car failed to yield and the car is ticketed. You’re just a cash cow.”
It should follow that you could deny the first cop’s accusation, and it’s your word vs. his, in which case logically you should win. When it’s your word’s against a cop’s the cop’s special status earns him credibility, but here the first cop is not testifying in an official capacity, but as a regular pedestrian.