### Air Pollution Control (Vehicle Design Standards) (Emission) Regulations 《空氣污染管制(車輛設計標準)(排放)規例》

3. Power of Authority to exempt
The Authority may exempt any motor vehicle or class of motor vehicle from the provisions of these regulations or any part thereof if he considers that it would be in the public interest to do so.

4A. Vehicle design standards relating to smoke emission for motor vehicles registered on or after 1 April 1995
(1) Every motor vehicle registered on or after 1 April 1995 which is equipped with a compression-ignition engine shall be so constructed that no excessive smoke is emitted from the vehicle. (L.N. 165 of 2005)
(2) For the purpose of subregulation (1), smoke shall be deemed excessive if the smoke emitted from the vehicle measured by means of the test procedure specified in the first column of Schedule 1 exceeds the maximum permitted smoke level specified in the second column of that Schedule or the maximum permitted smoke level in absolute units of light absorption specified in the third column of that Schedule.
(3) The provisions of this regulation are in addition to, and not in substitution for, regulation 31 of the Road Traffic (Construction and Maintenance of Vehicles) Regulations (Cap. 374 sub. leg. A).
(4) This regulation does not apply to vehicles specified in regulations 7G(13A) and (18) and 7H(5A) and (7). (L.N. 24 of 2017; L.N. 45 of 2020)
(L.N. 37 of 1995)

7D. Vehicle design standards for motor cycles and motor tricycles registered on or after 1 January 2007
(1) (Repealed L.N. 45 of 2020)(2) Subject to regulation 9, every motor tricycle registered on or after 1 January 2007 shall be so constructed that the emission from that motor tricycle conforms to the standards specified in Schedule 15.
(L.N. 111 of 2006)

### Air Pollution Control (Vehicle Design Standards) (Emission) Regulations 《空氣污染管制(車輛設計標準)(排放)規例》

8. Compliance with more stringent standards
Notwithstanding the provisions of regulations 4A, 7D, 7F, 7G, 7H, 7I and 14, if the Authority is of the opinion that the emission from a particular motor vehicle to which those regulations apply conforms to standards as stringent as, or more stringent than, the standards referred to in those regulations and applicable to it, then for the purposes of those regulations, such vehicle shall be taken as conforming to the standards so referred to and so applicable.
(L.N. 96 of 1998; L.N. 165 of 2005; L.N. 111 of 2006; L.N. 46 of 2012; L.N. 24 of 2017 and L.N. 55 of 2017; L.N. 45 of 2020)

### Air Pollution Control (Vehicle Design Standards) (Emission) Regulations 《空氣污染管制(車輛設計標準)(排放)規例》

9. Vehicles to which regulations 7D, 7F, 7G, 7H, 7I and 14 do not apply
(L.N. 111 of 2006; L.N. 46 of 2012; L.N. 24 of 2017 and L.N. 55 of 2017; L.N. 45 of 2020)Regulations 7D, 7F, 7G, 7H, 7I and 14 do not apply to— (L.N. 37 of 1995; L.N. 96 of 1998; L.N. 165 of 2005; L.N. 111 of 2006; L.N. 46 of 2012; L.N. 24 of 2017 and L.N. 55 of 2017; L.N. 45 of 2020)
(a) (Repealed L.N. 121 of 1999)(b) a special purpose vehicle; or
(c) any motor vehicle which is incapable by reason of its construction of exceeding a speed of 50 km/h on level ground under its own power. (L.N. 24 of 2017)
(Part III heading repealed L.N. 37 of 1995)

### Air Pollution Control (Vehicle Design Standards) (Emission) Regulations 《空氣污染管制(車輛設計標準)(排放)規例》

10. Requirements as to engine and fuel
(1) Every motor vehicle (other than a taxi and a light bus) that is registered on or after 1 January 1992 and is equipped with a positive-ignition engine shall be constructed— (L.N. 124 of 2003)
(a) to operate on unleaded petrol only; and
(b) in such a way that a petrol pump dispensing nozzle spout with an outside diameter of 23.6 mm cannot be inserted into its filling pipe. (L.N. 24 of 2017)
(2) (Repealed L.N. 24 of 2017)(3) Every taxi registered on or after 1 July 2017 equipped with an engine—
(a) must be equipped with a positive-ignition engine;
(b) must be constructed to—
(i) operate on liquefied petroleum gas only;
(ii) operate on unleaded petrol only; or
(iii) operate on liquefied petroleum gas and unleaded petrol only; and
(c) for a taxi constructed to operate on unleaded petrol—must be constructed in such a way that a petrol pump dispensing nozzle spout with an outside diameter of 23.6 mm cannot be inserted into its filling pipe. (L.N. 24 of 2017)
(3A) Every light bus that is registered on or after 1 August 2003 and is equipped with a positive-ignition engine shall be constructed—
(a) (i) to operate on unleaded petrol only; and
(ii) in such a way that a petrol pump dispensing nozzle spout with an outside diameter of 23.6 mm cannot be inserted into its filling pipe; or (L.N. 24 of 2017)
(b) to operate on liquefied petroleum gas only. (L.N. 124 of 2003)
(4) This regulation shall not apply to motor cycles and motor tricycles.
(L.N. 101 of 2001)

### Air Pollution Control (Vehicle Design Standards) (Emission) Regulations 《空氣污染管制(車輛設計標準)(排放)規例》

14. Certain motor vehicles to be equipped with on-board diagnostic system
(1)-(7) (Repealed L.N. 24 of 2017)(8)-(10) (Repealed L.N. 45 of 2020)(11) (Repealed L.N. 24 of 2017)(12) Every motor vehicle referred to in regulations 7G(12), (13) and (14) and 7H(2) and (5) must be fitted with an on-board diagnostic system so constructed that it conforms to the requirements as specified in— (L.N. 24 of 2017; L.N. 45 of 2020)
(a) the on-board diagnostic system specifications administered by the Environmental Protection Agency of the United States of America;
(b) the on-board diagnostic system specifications stipulated in Directive 2005/55/EC of the European Parliament and of the Council as amended by its subsequent amendments up to and including amendments made by Commission Directive 2008/74/EC; or
(c) the on-board diagnostic system specifications administered by the Ministry of Land, Infrastructure, Transport and Tourism of Japan. (L.N. 46 of 2012)
(L.N. 157 of 2000)

### Air Pollution Control Ordinance 《空氣污染管制條例》

1. Short title
This Ordinance may be cited as the Air Pollution Control Ordinance.