18. (1) Where a person is convicted of an offence under this Ordinance or of an offence in the commission of which a motor vehicle was used, the Court by which such person is convicted, may, subject to the provisions of this section, in addition to imposing any other punishment authorised by law, declare the person so convicted to be disqualified, for such period as the Court may specify, for holding any driving licence or for holding a driving licence to drive a particular class or description of vehicle. (2) A Court shall order the disqualification of an offender, convicted of an offence punishable under section 143, and such disqualification shall be for a period of not less than one year. (3) A Court shall order the disqualification of an offender, convicted of an offence against the provisions of clause (c) of sub section (1) of section 102 or of section 104, and such disqualification shall be for a period of not less than six months. (4) A Court shall, unless for special reasons to be recorded in writing it thinks fit to order otherwise, order the disqualification of an offender-(a) who having been convicted of an offence punishable under section 143 is again convicted of an offence punishable under that section;(b) who is convicted of an offence punishable under section 148, or (c) who is convicted of an offence punishable under section 152: Provided that, the period of disqualification shall not exceed, in the cases referred to in clauses (a) and (b), two years or, in the case referred to in clause (c), one year. (5) A Court ordering the disqualification of an offender convicted of an offence punishable under section 143 may direct that the offender shall, whether he has previously passed the test of competence to drive specified in the Third Schedule or not, remain disqualified until he has, subsequent to the making of the order of disqualification, passed that test to the satisfaction of the licensing authority. (6) The Court to which an appeal lies from any conviction of an offence of the nature specified in sub section (1) may set aside or vary any order of disqualification made by the Court below, and the Court to which appeals ordinarily lie from any Court, may set aside or vary any order of disqualification made by that Court, notwithstanding that no appeal lies against the conviction in connection with which such order was made.