Schedule 5

The level of CO emitted from the exhaust of a three-wheeled motor cycle or scooter that is registered in Singapore, must not exceed 4.5% by volume as measured when the motor cycle or scooter is at idle speed.(2) The level of HC emitted from the exhaust of a three-wheeled motor cycle or scooter that is registered in Singapore, must not exceed —

for a motor cycle or scooter with a 2-stroke engine — 7800 ppm of HC; and

for a motor cycle or scooter with a 4-stroke engine — 2000 ppm of HC,as measured when the motor cycle or scooter is at idle speed.[S 188/2023 wef 06/04/2023]3D.—

Paragraphs 3, 3A, 3B and 3C do not apply to any petrol driven motor car or any motor cycle or scooter that is registered as —

a classic vehicle; (b)a normal vintage vehicle; (c)a restricted vintage vehicle; or

a revised use vintage vehicle.(2) Where any petrol driven motor car is registered as a vehicle mentioned in sub‑paragraph (1) and has an original first registration date falling within a period specified in the first column of the following table, the level of CO and HC emitted from the exhaust of such a motor car must not exceed the emission limits, if any, specified opposite in the second column of that table:First columnSecond columnOriginal first registration date of motor carEmission limits Measured at idle speed CO (percentage by volume) HC (ppm) (a)Before 1 October 19866.0No limit(b)On or after 1 October 1986 but before 1 July 19924.5No limit(c)On or after 1 July 1992 but before 1 January 20013.5No limit(3) Where any motor cycle or scooter is registered as a vehicle mentioned in sub-paragraph (1) and has an original first registration date falling within a period specified in the first column of the following table, the level of CO and HC emitted from the exhaust of such a motor cycle or scooter must not exceed the emission limits, if any, specified opposite in the second column of that table:First columnSecond columnOriginal first registration date of motor cycle or scooterEmission limits Measured at idle speed CO (percentage by volume) HC (ppm) (a)Before 1 October 19866.0No limit(b)On or after 1 October 1986 but before 1 July 20034.5No limit[S 189/2018 wef 01/04/2018]4. Every diesel driven motor vehicle that is in use shall not emit smoke of opacity greater than 40 Hartridge Smoke Units (HSU) or its equivalent.[S 766/2013 wef 01/01/2014]5. Every motor vehicle (whether petrol driven or diesel driven) must not emit any smoke or visible vapour when in use.[S 781/2017 wef 01/04/2018]6. In this Schedule —“classic vehicle”, “normal vintage vehicle”, “restricted vintage vehicle” and “revised use vintage vehicle” have the same meanings as in rule 2(1) of the Road Traffic (Motor Vehicles, Registration and Licensing) Rules (R 5);[S 189/2018 wef 01/04/2018][S 172/2023 wef 31/12/2021]“CO” means carbon monoxide;“HC” means hydrocarbons;“high idle speed” means an engine speed, of a stationary motor vehicle, that is at least 2,000 revolutions per minute;“idle speed” means the engine speed of a stationary motor vehicle when its engine is left on and its accelerator is not depressed;“lambda” means the measurement of the air to fuel ratio of a motor vehicle measured in accordance with the simplified Brettschneider equation specified in note (*) of paragraph 5.3.7.3. of Regulation No. 83 of the Economic Commission for Europe of the United Nations (UN/ECE) ‑ Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirement (Revision 3);“original first registration date”, in relation to a classic vehicle, normal vintage vehicle, restricted vintage vehicle or revised use vintage vehicle, means —

in a case where the motor vehicle was registered for the first time under the law relating to motor vehicles of more than one country — the earliest date of first registration; or

in a case where the motor vehicle was registered for the first time under the law relating to motor vehicles of only one country — the date the motor vehicle was registered for the first time under that law;[S 189/2018 wef 01/04/2018]“ppm” means parts per million.[S 781/2017 wef 01/04/2018]