I got a failure to slow down/change lanes to a emergency vehicle ?

first thats way to broad a violation term and he said I didnt change lanes I couldnt traffic on my left made that impossible next he said didnt slow down 20 mph but I was slowing and he didnt record my speed so how does he know that I wasnt down that far or close to itI got a failure to slow down/change lanes to a emergency vehicle ?
It means you didnt get outta the way fast enough. there must have been more you coulda done (like change lanes to the RIGHT) or you had a cop that needed to write up some tickets, if you feel it was unfair, go to your court, where the cop that wrote you a ticket can further explain why you got one in front of a judge. I got a failure to slow down/change lanes to a emergency vehicle ?
you're only recourse is going to court and fighting this charge. Draw a picture for the judge. This policeman doesn't like you a lot to make up all these conjectures.