The Impact of Public–Private Partnership Investments in Transport on CO 2 Emissions in East Asian and Pacific Regions: A VAR Model

Jawaher Binsuwadan, Hawazen Almugren, Rana Alshamrani and Arwa Abuhaimed ()
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Jawaher Binsuwadan: Department of Economics, College of Business Administration, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Hawazen Almugren: Department of Economics, College of Business Administration, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Rana Alshamrani: Department of Economics, College of Business Administration, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Arwa Abuhaimed: Department of Economics, College of Business Administration, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia

Sustainability, 2025, vol. 17, issue 20, 1-19

Abstract: This paper investigates investments in public–private partnerships within the transport sector and their impact on CO 2 emissions from transportation in the East Asian and Pacific regions. It explores the relationships between CO 2 emissions from transportation, investment in public–private partnerships, renewable energy, research and development, and economic growth. The study employs a unit root test, a cointegration model, and a vector autoregressive model, covering the period from 1990 to 2023. The findings suggest that public–private partnerships in the transport sector can reduce CO 2 emissions through adequate investment. Furthermore, renewable energy diminishes CO 2 emissions by regulating them and concurrently producing fewer emissions. Environmental research and development help reduce CO 2 emissions in the transport sector, while economic growth contributes to an increase in transport sector CO 2 emissions. These findings provide critical insights for policymakers, underscoring the necessity for a systematic reallocation of public–private partnership investments in the transport sector to reduce CO 2 emissions and enhance environmental sustainability in East Asian and Pacific regions.

Keywords: public–private partnership; CO 2 emissions; renewable energy; vector autoregressive model; economic growth; transport (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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