Overcoming the Downs-Thomson Paradox by transit subsidy policies

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• 作者：Wei (Walker) Wang^a ; ^b ; David Z.W. Wang^b ; ^{wangzhiwei@ntu.edu.sg} ; Fangni Zhang^c ; Huijun Sun^d ; Wenyi Zhang^d ; Jianjun Wu^e
• 关键词：Transit operating schemes ; Downs-Thomson Paradox ; Departure time and mode choices ; Transit subsidy ; Road pricing
• 刊名：Transportation Research Part A: Policy and Practice
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：95
• 期：Complete
• 页码：126-147
• 全文大小：2828 K
• 卷排序：95

文摘

Consider a competitive highway/transit transportation system in which travelers either drive on the bottleneck-constrained highway or take scheduled trains from home to the workplace in the morning peak hours. This paper explores the impact of bottleneck capacity expansion on transit operating schemes (fleet size and fare) and travelers’ departure time and mode choices. Due to the potential occurrence of the Downs-Thomson (D-T) Paradox after highway capacity expansion, the paper investigates whether the D-T Paradox can be circumvented by implementing transit subsidy policies. The effects of different transit subsidy schemes are explored: subsidizing the transit company (cost subsidy) or the passengers (passenger subsidy) with the financial support from either government funding or road pricing revenue. For each combination of subsidy method and financial sourcing, the condition for overcoming the D-T Paradox is established.