No fix statute
In Massachusetts, if you are mailed a citation, you may have an automatic defense under the no fix statute, MGL 90 c section 2.
Was your ticket mailed?If your ticket was mailed to you, you may have a defense. That is the first requirement to apply this as a defense.
Was the officer able to stop you?Were you stopped by the officer? Was he able to catch up with your car? If you were stopped you have met this requirement.
Could the officer identify you?If you provided yoy license to the officer and he was able to determine your identity, you have met this requirement.
Was there some other curcumstance preventing the officer from writing the ticket?This requirement leaves the burden on the officer to explain why he was unable to issue a ticket at the time of the stop. Possible reasons could be that there was an emergency situation such as an accident resulting in the ticket, or that the officer was on the way to a call, preventing him from issuing the ticket at the scene of the violation.