TITLE:
The Analysis of Spatial-Temporal Evolution of City Accessibility Based on Highway Network in Henan Province in China
AUTHORS:
Mingting Ba, Hongling Meng, Kaiguang Zhang, Yanmin Sun
KEYWORDS:
Highway Network, Accessibility, Inverse of Time Distance, Spatial Distribution, Spatial-Temporal Evolution, Spatial Aggregation, Henan Province
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.11 No.2,
April
29,
2021
ABSTRACT: Accessibility is an important tool to
evaluate the maturity of a regional traffic network structure which describes the traffic convenience in the traffic network. The paper defines a new accessibility index by using the
resident population weighted average value of
the sum of inverse of the traveling time distance and time threshold
coming from ordinary traffic network, and then uses this accessibility index to
analyze the spatial-temporal characteristics of Henan highway network, as well
as its evolution patterns from 2005 to 2020. The results show that with the
expansion and improvement of Henan highway network, city accessibility level
has been significantly improved, spatial convergence is obvious, the cities in
the north central are always High-High aggregation area, the cities in the
south are always Low-Low aggregation area, gradually forming the
characteristics of Northwest high and Southeast low, relative balance between
East and West. There is some non-conforming phenomenon in highway mileage
growth and improvement of the city accessibility levels, but this situation is
being weakened, the highway network layout is gradually rationalized, the
spatial distribution of city accessibility and that of population are beginning
to converge.