Aiming at providing measures and suggestions for improving the job accessibility for largecities in China, the distribution and changing characteristics of job accessibility underdifferent travel distances and different travel modes are analyzed on the basis of comparingconventional job accessibility models. Taking Nanjing one of the most developed large citiesin China as an example, the analysis reveals that the job accessibility increases diminishinglywith the increase of trip distance, and that the expansion of city size and the increase of tripdistance do not necessarily bring any improvement to job accessibility. Then, the urban areais divided into two parts, the old city and the new city. The extent of regional differences ofjob accessibility is analyzed comparatively, and the reasons for these differences are foundout. The results show that the primary reason for the lower job accessibility in the new city isthe lack of supporting employment opportunities and cross-regional traffic channels. Finally,based on the experience learned from other cities in the United States, measures forimproving the job accessibility are proposed to guide the decision-making in land useplanning and traffic facility construction for large cities in China.
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