Cops hate wussies who cry over minor things. Cops see way too much really bad crap happen to think that a ticket is any big deal. It sucks, but it's not the end of the world, don't act like it is. Don't make lame excuses . The cop's liable to ask you why you were doing what you were doing.
Cops understand human error.
Note - this doesn't apply if the violation is obviously intentional. You can't claim human error for driving 90 mph through a school zone. That would just insult the cop's intellegence. Hold your tongue afterwards . If you get a ticket and feel like smarting off afterwards, consider this - Cops write notes for courtroom testimony.