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Table 6.5: Annual greenhouse gas emissions from the land transport fleet (2005)

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Category1

CO2 (t/yr)

CH4 (t/yr)2

N2O (t/yr)2

Total (t/yr)2

Percentage of GHG emissions1

Percentage of VKT1

Cars (petrol)

8,590,470

3,653

641,037

9,235,160

68.6%

72.2%

Cars (diesel)

634,499

1,042

3,354

638,895

4.7%

5.7%

LCV (petrol)

75,503

32

5,634

81,169

0.6%

6.3%

LCV (diesel)

767,095

1,260

4,055

772,410

5.7%

6.9%

HCV (petrol)

100,549

26

5,563

106,138

0.8%

0.5%

HCV (diesel)

2,186,968

1,960

50,442

2,239,370

16.6%

7.1%

Buses – petrol

68,519

18

3,791

72,327

0.5%

0.3%

Buses – diesel

310,358

278

7,158

317,794

2.4%

1.0%

1 LCV = light commercial vehicle; HCV = heavy commercial vehicle;

GHG = greenhouse gas, VKT = vehicle kilometres travelled.

2 Estimates are reported in units of CO2 equivalents using Global Warming Potentials published in the IPCC Second Assessment Report. The emission factors are substantially the same as those given in the Third IPCC Assessment report. Any uncertainties in these totals will be dominated by uncertainties in determining the fleet profile rather that in the emissions factors themselves.