34. For the purposes of rule 33, the portable warning sign shall be of the following type approved by the Minister for Home Affairs and it shall —
conform with the requirements of the British Standard: Automobile Series Specification for Advance Warning Triangle to indicate Temporary Obstructions (B.S. AU 47: 1965);
bear the PSB Regulatory Batch Inspection Label of the Singapore Productivity and Standards Board; and
comply with the requirements specified in the Schedule.