Research Article
Study on the Annual Reduction Rate of Vehicle Emission Factors for Carbon Monoxide: A Case Study of Urban Road Tunnels in Shenzhen, China
Table 8
Annual vehicle kilometers traveled.
| | Traffic fleet | Passenger car | Taxi | Bus | Coach | Light-duty truck | Heavy-duty truck | Motorcycle |
| | AVKT (km/year) | 24,719 | 145,894 | 71,947 | 164,962 | 24,748 | 27,593 | 4331 | | Traffic composition (%) | 85.42 | 0.52 | 0.99 | 1.11 | 7.99 | 3.76 | 0.21 |
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