[sustran] m/c and aging car emission in Jakarta &Bandung

[Harun al-Rasyid Sorah Lubis]

Dear netters,

FYI on Indonesia case, below is the estimated profile of m/c
emission contribution in Bandung & Jakarta by year 2000,
from our ongoing studies.

Bandung 2000
 Veh ; Veh.Proportion; Emission Contribution
Private Car; 31.6 ; 32.8
Bus; 6.5; 7.0
Truck; 10.1; 9.1
M/c ;51.8; 51.0

Jakarta 2000
Private Car; 28.8 ; 22.5
Bus ;9.7 ;13.9
Truck; 9.2 ;6.3
M/c; 52.3 ;57.3

A rather strange contribution can be observed from buses in the two cities.
This can be explained as  bus-mileage is less in Bandung than that of in
Jakarta.
This in turn made the m/c emission cotribution in Jakarta is greater than
that of in Bandung, though m/c proportion is more or less the same in the
two cities.
Sustainably speaking, this explain the incentive putting more buses (public
transport)
However, the m/c existence yet dominate the emission contribution.

On the other hand, aging cars do contribute a lot as well. In the two
cities,
our recent study tells:

Bandung 2000
 Veh. year Brand ;Veh. Proportion;  Emission Contribution
< 1984 ;50.6 ; 68.4
1985 =< Veh.< 1995; 21.7; 21.4
>= 1995 ;27.7 ;10.2

Jakarta 2000
 Veh. year Brand ;Veh. Proportion;  Emission Contribution
< 1984 ;31.8; 51.2
1985 =< Veh.  < 1995 ;36.1 ;30.6
>= 1995 ;32.1 ;18.2

M/c ownership is a stepping stone before
owning a car, and a response to  avoid bad public transport service,
for the time being.

Aging car can be controlled through annual vehicle test.
This is being considered to be implemented by the government shortly,
and scrappage policy maybe a must in the near future.

Putting more public transport should be the genuine commitment or political
will.
It is,  of course, no wonder. BUT, there should be a good will to manage or
allocate operating subsidies, the management  of which is still not in
existence so far.

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Harun al-Rasyid S. Lubis             http://trans.si.itb.ac.id
Traffic Lab, Transport Engineering Division
Dept. of Civil Engineering - ITB
Jl. Ganeca 10 Bandung 40132 - Indonesia
Tel/Facs. +62 22  250 23 50  halubis at trans.si.itb.ac.id