Subway network expansion and transit equity: A case study of Gwangju metropolitan area, South Korea

Yena Song, Hyun Kim, Keumsook Lee, Kwangwon Ahn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Public transit systems enable metropolitan areas to develop and be sustained by providing mobility to people. At the same time, they can function as tools to alleviate the social and spatial exclusion of deprived groups or communities. Recently, equity has become a crucial element in transportation planning, yet it has not received sufficient attention. This study examined transit equity and the changes in it resulting from a major expansion of the transit network in a metropolitan area. Three stages of transit service provision were defined based on the actual network expansion plans. Transit equity at the global level was measured using the concept of the Gini index. The resultant Gini indices indicated that transit equality has improved and will continue to improve with the provision of additional subway lines. This was followed by a statistical analysis to determine which groups or areas were more likely to benefit from the expansion. When only a linear subway line was added to the bus network, transit dependent groups did not appear to benefit from the increased transit supply. However, with the addition of another circular subway line, females and young people were found to have a significant and positive association with the increased transit supply, indicating a vertically fairer distribution of resources.

Original languageEnglish
Pages (from-to)148-158
Number of pages11
JournalTransport Policy
Volume72
DOIs
Publication statusPublished - 2018 Dec

Fingerprint

Subways
South Korea
equity
metropolitan area
agglomeration area
supply
transportation planning
service provision
Group
statistical analysis
equality
Statistical methods
exclusion
Planning
planning
resource
resources
community
index

All Science Journal Classification (ASJC) codes

  • Geography, Planning and Development
  • Transportation
  • Law

Cite this

@article{a6329c4c8cb745638398d6be4e77b758,
title = "Subway network expansion and transit equity: A case study of Gwangju metropolitan area, South Korea",
abstract = "Public transit systems enable metropolitan areas to develop and be sustained by providing mobility to people. At the same time, they can function as tools to alleviate the social and spatial exclusion of deprived groups or communities. Recently, equity has become a crucial element in transportation planning, yet it has not received sufficient attention. This study examined transit equity and the changes in it resulting from a major expansion of the transit network in a metropolitan area. Three stages of transit service provision were defined based on the actual network expansion plans. Transit equity at the global level was measured using the concept of the Gini index. The resultant Gini indices indicated that transit equality has improved and will continue to improve with the provision of additional subway lines. This was followed by a statistical analysis to determine which groups or areas were more likely to benefit from the expansion. When only a linear subway line was added to the bus network, transit dependent groups did not appear to benefit from the increased transit supply. However, with the addition of another circular subway line, females and young people were found to have a significant and positive association with the increased transit supply, indicating a vertically fairer distribution of resources.",
author = "Yena Song and Hyun Kim and Keumsook Lee and Kwangwon Ahn",
year = "2018",
month = "12",
doi = "10.1016/j.tranpol.2018.08.007",
language = "English",
volume = "72",
pages = "148--158",
journal = "Transport Policy",
issn = "0967-070X",
publisher = "Elsevier Limited",

}

Subway network expansion and transit equity : A case study of Gwangju metropolitan area, South Korea. / Song, Yena; Kim, Hyun; Lee, Keumsook; Ahn, Kwangwon.

In: Transport Policy, Vol. 72, 12.2018, p. 148-158.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Subway network expansion and transit equity

T2 - A case study of Gwangju metropolitan area, South Korea

AU - Song, Yena

AU - Kim, Hyun

AU - Lee, Keumsook

AU - Ahn, Kwangwon

PY - 2018/12

Y1 - 2018/12

N2 - Public transit systems enable metropolitan areas to develop and be sustained by providing mobility to people. At the same time, they can function as tools to alleviate the social and spatial exclusion of deprived groups or communities. Recently, equity has become a crucial element in transportation planning, yet it has not received sufficient attention. This study examined transit equity and the changes in it resulting from a major expansion of the transit network in a metropolitan area. Three stages of transit service provision were defined based on the actual network expansion plans. Transit equity at the global level was measured using the concept of the Gini index. The resultant Gini indices indicated that transit equality has improved and will continue to improve with the provision of additional subway lines. This was followed by a statistical analysis to determine which groups or areas were more likely to benefit from the expansion. When only a linear subway line was added to the bus network, transit dependent groups did not appear to benefit from the increased transit supply. However, with the addition of another circular subway line, females and young people were found to have a significant and positive association with the increased transit supply, indicating a vertically fairer distribution of resources.

AB - Public transit systems enable metropolitan areas to develop and be sustained by providing mobility to people. At the same time, they can function as tools to alleviate the social and spatial exclusion of deprived groups or communities. Recently, equity has become a crucial element in transportation planning, yet it has not received sufficient attention. This study examined transit equity and the changes in it resulting from a major expansion of the transit network in a metropolitan area. Three stages of transit service provision were defined based on the actual network expansion plans. Transit equity at the global level was measured using the concept of the Gini index. The resultant Gini indices indicated that transit equality has improved and will continue to improve with the provision of additional subway lines. This was followed by a statistical analysis to determine which groups or areas were more likely to benefit from the expansion. When only a linear subway line was added to the bus network, transit dependent groups did not appear to benefit from the increased transit supply. However, with the addition of another circular subway line, females and young people were found to have a significant and positive association with the increased transit supply, indicating a vertically fairer distribution of resources.

UR - http://www.scopus.com/inward/record.url?scp=85056231324&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056231324&partnerID=8YFLogxK

U2 - 10.1016/j.tranpol.2018.08.007

DO - 10.1016/j.tranpol.2018.08.007

M3 - Article

AN - SCOPUS:85056231324

VL - 72

SP - 148

EP - 158

JO - Transport Policy

JF - Transport Policy

SN - 0967-070X

ER -