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Following is a question by the Hon Audrey Eu and a written reply by the Secretary for Health, Welfare and Food, Dr York Chow (in the absence of the Secretary for the Environment, Transport and Works), at the Legislative Council meeting today (May 30) :
Question:
Regarding information on certain classes of vehicles, will the Government inform this Council:
(a) of the respective current numbers of registered vehicles belonging to the following classes:
Number of vehicles of
permitted gross vehicle
weight
Number of ***********************
vehicles of exceeding
any permitted 15 but not
Vehicle gross vehicle exceeding exceeding
class weight 24 tonnes 24 tonnes
********* ************* ********* *********
(i) buses
in the
fleets of
franchised
bus
companies
(ii)buses
other than
those in (i)
above
(iii)medium
goods
vehicles
(iv) heavy
goods
vehicles
(v) trailers
(vi) special
purpose
vehicles
(b) of the following in respect of each class of vehicles mentioned in item (a) above:
(i) the estimated annual vehicle distance in kilometres travelled in 2005 and 2006,
(ii) the emission factor per kilometre for each air pollutant, and
(iii) the annual contributions, expressed in percentages, to total vehicle emissions in 2005 and 2006?
Reply:
Madam President,
As of May 2007, the total numbers of registered vehicles of the following vehicle classes and the breakdown by reference to the requested permitted gross vehicle weight (PGVW) are as follows:
Number of vehicles of
permitted gross vehicle
weight
Number of ***********************
vehicles of exceeding
any permitted 15 but not
Vehicle gross vehicle exceeding exceeding
class weight 24 tonnes 24 tonnes
********* ************* ********* *********
(i) Franchised
buses 5,887 5,282 0
(ii)Non-
franchised
buses 7,568 1,686 0
(iii) Medium
goods vehicles 42,718 31,461 0
(iv) Heavy
goods vehicles 3,429 0 3,429
(v) Trailers 20,507 90 20,376
(vi)Special
purpose
vehicles 1,178 194 76
The vehicle kilometres travelled for franchised buses, non-franchised buses and goods vehicles for 2005 and 2006 are estimated as follows:
Vehicle kilometres travelled (million)
**************************************
2005 2006
**** ****
Franchised
buses 513 513
Non-
franchised
buses 333 359
Goods
vehicles* 1,333 1,347
* Including heavy goods vehicles, medium goods vehicles, trailers on tow by goods vehicles and special purpose vehicles.
Instead of adopting the emission factor approach, the Environmental Protection Department has been using a comprehensive emission model to estimate vehicle emission. It therefore does not develop emission factors for different vehicle classes. Based on the latest emission data of 2005, the annual contributions (in percentages) of franchised buses, non-franchised buses and goods vehicles to total road vehicle emission are as follows:
Respirable Volatile
suspended Nitrogen organic Carbon
particulates oxides carbons monoxide
************ ******** ******** ********
Franchised
buses 5% 10% <5% <5%
Non-
franchised
buses 5% 5% <5% <5%
Goods
vehicles* 55% 55% 15% 5%
* Including heavy goods vehicles, medium goods vehicles, trailers on tow by goods vehicles and special purpose vehicles.
Ends/Wednesday, May 30, 2007
Issued at HKT 12:59
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