Power of Municipal Court to hear cases in absence of accused summoned to appear.

If, in any case, any person, who is summoned to appear before a Municipal Court to answer any charge of an offence under this Act or the rules or the regulations made thereunder, fails to appear on the date and at the time and the place mentioned in the summons issued in this behalf or on any subsequent date to which the hearing of such case is adjourned, the Municipal Court may, if- (a) service of the summons is, to his satisfaction, proved to have been effected, and (b) no sufficient cause is shown for non-appearance of such person, hear and determine such case in the absence of such person.