You would need to consult with a Maryland attorney.See question
It is possible, see the below excerpt from the USCIS interview guidelines:
(2) Evaluating Requests for the Rescheduling of Interviews . (See 8 CFR 103.2(b)(9) )
Prior to and at the date and time of the interview, an applicant or petitioner may (a) withdraw the application or petition; or (b) request, for good cause, that the interview be rescheduled.
In order to reschedule the interview, the adjudicator, in his or her discretion, must determine that the applicant, petitioner, beneficiary, or other individual is unable to appear at the scheduled date and time because of circumstances beyond the individual's control.
If the adjudicator determines that good cause exists for the applicant or petitioner's request, the adjudicator will reschedule the interview and mail a new interview notice. If the adjudicator determines that no good cause exists, the adjudicator will adjudicate the application or petition as instructed in AFM Chapter 15.1(d)(2) .
An attorney or representative authorized to act on behalf of the applicant or petitioner may also submit a good cause request for rescheduling the interview.
If an attorney or other representative is unable to attend an interview for good cause, the local office should make best efforts to accommodate a timely request to reschedule an interview. Such requests are considered to be for good cause when the attorney or other representative has notified the local office that he or she is unable to appear at the scheduled date and time because of circumstances beyond his or her control, including but not limited to, scheduling conflicts resulting from a requirement that the attorney or other representative appear in court, previously planned travel, and any situation where two interviews of clients represented by the same attorney or representative are scheduled at the same time.
When an attorney or other representative is unable to attend the interview for any reason, the individual being interviewed may elect to proceed with the interview without his or her representative. The applicant's or petitioner's decision to proceed without his or her attorney or accredited representative must be voluntary. If the individual wishes to proceed without his or her representative, the USCIS official should obtain a written statement from the individual. Written statements are to be filed in the record of proceedings. When possible, the attorney or accredited representative should communicate his or her consent to proceed without him or her present. The officer should still consider statements and submissions by the individual's attorney or other representative in his or her absence.See question
You may have defenses to raise with the prosecutor, but it would depend on the attorney's evaluation of all the facts, including your dash cam. An attorney is highly recommended.See question
It can vary based on case circumstances, including where the consul is.See question
In NJ, the following website provides gateway information.