S.C. Code § 56-5-2580
Jurors subpoenaed and in attendance at federal court or subpoenaed and in attendance at circuit or county court in this State in a municipality which has parking meters or parking regulations from the standpoint of continuous time of parking are allowed to use parking spaces without depositing coins in the meters and are not subject to these parking regulations; however, if parking is provided otherwise for jurors, this exemption does not apply.
In order to avail himself of the privilege conferred by this section, the juror shall place in or about his vehicle, so that it can be easily seen and read, the subpoena requiring his attendance or some statement in writing signed by the officer issuing it, or some agent of his thereunto authorized, to the effect that the juror has been subpoenaed and is attendant upon such court.
The privilege granted shall be effective only during the particular week in which the court is being held, unless for some reason the attendance of the juror under special circumstances is continued into the succeeding week, and only during the days on which the court is in session and at which the attendance of the juror is required. In determining the duration of the privilege conferred by this section, a part of a day shall be construed as a whole day.
S.C. Code § 56-5-2580