SECTION 1. Section twenty-one hundred and sixty-one of Act Numbered Twenty-seven hundred and eleven, known as the Administrative Code, is hereby amended to read as follows:
"SEC. 2161. Delinquency.—The road tax shall be deemed to be delinquent after the first day of May of each year, but persons liable to pay this tax not residents of the province prior to May first of any year, but who enter and reside in the province after that date, may pay the tax within thirty days after their arrival in the province."