01551482

Component

Seeking relationships among commuting CO₂ emissions (CCE), urban spatial characteristics and social activity characters are crucial for Chinese low carbon transport. This paper intends to analyze the impacts of the urban spatial characteristics of household location separated by the ring roads (HL) and home-city center distance (HCCD), combined with car availability or planning to buy cars (C/PBC) on the CCE across the urban area in Xi‘an, one of the typical Chinese cities in its rapid motorization and urbanization process now. Stated preference (SP) surveys of 1501 sampled households were carried out, the emission factor method combined with Voronoi Diagram was used for the CCE calculation of zone level, and liner regression models were established to measure these impacts. This paper finds: CCE spatial distribution presents a low-high-low character from the center to the suburb; the best explanatory variables of CCE are C/PBC combined with the HL, secondly the C/PBC combined with HCCD and thirdly the C/PBC combined with distance to transit; the area inside the 1st 14 Ring Rd. is most densely populated but has smaller CCE due to short commuting distances, the smallest parking supply of neighborhoods and the densest transit lines, while the highest emitters mostly locate near the 2nd 16 Ring Rd. and radioactive roads due to the better environment of driving and parking. The findings indicate that CCE reduction needs not only supplying alternative low carbon mode choices with good service, but also strict control over car use and parking, which needs great attentions to other similar developing cities.

This paper was sponsored by TRB committee ADC70 Transportation Energy. Alternate title: Sprawling City's Home-Based Commuting Carbon Dioxide Spatial Distribution: Case Study in Xi'an, China

01550057

15-2944

English

19p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Carbon dioxide; Case studies; Cities; Commuting; Households; Linear regression analysis; Location; Pollutants; Traffic distribution; Urbanization

Xi'an (China)

Environment; Highways; Planning and Forecasting; I15: Environment; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2015 Paper #15-2944

TRIS, TRB, ATRI

Dec 30 2014 12:59PM