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Actually, your chances are very good that with a clear record for 18 years and the fact he charged you with both charges that if you plead not guilty and then ask for a conference with the prosecutor that the prosecutor at the very least will dismiss the careless and even reduce the miles over the speed limit to get you to agree to a plea on the one ticket. Of course, this depends on the mood of the prosecutor when you get to them at the time, but in most all cases, they will agree to reduce the speed to 10 over the limit and dismiss the careless, especially if you bring your witnesses with you to tell the prosecutor what you said above about never seeing lights or hearing a siren even with the radio low.
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