Road network upgrading and overland trade expansion in Sub-Saharan Africa
AbstractRecent research suggests that isolation from regional and international markets has contributed significantly to poverty in many Sub-Saharan African countries. Numerous empirical studies identify poor transport infrastructure and border restrictions as significant deterrents to trade expansion. In response, the African Development Bank has proposed an integrated network of functional roads for the subcontinent. Drawing on new econometric results, the authors quantify the trade-expansion potential and costs of such a network. They use spatial network analysis techniques to identify a network of primary roads connecting allSub-Saharan capitals and other cities with populations over 500,000. The authors estimate current overland trade flows in the network using econometrically-estimated gravity model parameters, road transport quality indicators, actual road distances, and estimates of economic scale for cities in the network. Then they simulate the effect of feasible continental upgrading by setting network transport quality at a level that is functional, but less highly developed than existing roads in countries like South Africa and Botswana. The authors assess the costs of upgrading with econometric evidence from a large World Bank database of road project costs in Africa. Using a standard approach to forecast error estimation, they derive a range of potential benefits and costs. Their baseline results indicate that continental network upgrading would expand overland trade by about $250 billion over 15 years, with major direct and indirect benefits for the rural poor. Financing the program would require about $20 billion for initial upgrading and $1 billion annually for maintenance. The authors conclude with a discussion of supporting institutional arrangements and the potential cost of implementing them.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 4097.
Date of creation: 01 Dec 2006
Date of revision:
Transport Economics Policy&Planning; Common Carriers Industry; Rural Roads&Transport; Transport and Trade Logistics; Economic Theory&Research;
This paper has been announced in the following NEP Reports:
- NEP-AFR-2007-01-13 (Africa)
- NEP-ALL-2007-01-13 (All new papers)
- NEP-DEV-2007-01-13 (Development)
- NEP-INT-2007-01-13 (International Trade)
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- Longo, Robert & Sekkat, Khalid, 2004.
"Economic Obstacles to Expanding Intra-African Trade,"
Elsevier, vol. 32(8), pages 1309-1321, August.
- Roberto Longo & Khalid Sekkat, 2004. "Economic obstacles to expanding intra-African trade," ULB Institutional Repository 2013/7358, ULB -- Universite Libre de Bruxelles.
- Anderson, James E, 1979. "A Theoretical Foundation for the Gravity Equation," American Economic Review, American Economic Association, vol. 69(1), pages 106-16, March.
- Carlos Carrillo & Carmen A. Li, 2002.
"Trade Blocks and the Gravity Model: Evidence from Latin American Countries,"
Economics Discussion Papers
542, University of Essex, Department of Economics.
- Carrillo-Tudela, Carlos & A Li, Carmen, 2004. "Trade Blocks and the Gravity Model: Evidence from Latin American Countries," Journal of Economic Integration, Center for Economic Integration, Sejong University, vol. 19, pages 667-689.
- Bergstrand, Jeffrey H, 1989. "The Generalized Gravity Equation, Monopolistic Competition, and the Factor-Proportions Theory in International Trade," The Review of Economics and Statistics, MIT Press, vol. 71(1), pages 143-53, February.
- J. Vernon Henderson, Zmarak Shalizi, and Anthony J. Venables, 2001.
"Geography and development,"
Journal of Economic Geography,
Oxford University Press, vol. 1(1), pages 81-105, January.
- Esteban Rossi-Hansberg, 2005. "A Spatial Theory of Trade," American Economic Review, American Economic Association, vol. 95(5), pages 1464-1491, December.
- Heggie, I.G. & Vickers, P., 1998. "Commercial Management and Financing of Roads," Papers 409, World Bank - Technical Papers.
- Limao, Nuno & Venables, Anthony J., 1999. "Infrastructure, geographical disadvantage, and transport costs," Policy Research Working Paper Series 2257, The World Bank.
- Bergstrand, Jeffrey H, 1990. "The Heckscher-Ohlin-Samuelson Model, the Linder Hypothesis and the Determinants of Bilateral Intra-industry Trade," Economic Journal, Royal Economic Society, vol. 100(403), pages 1216-29, December.
- Hertel, Thomas W. & Winters, L. Alan, 2005. "Poverty impacts of a WTO agreement : synthesis and overview," Policy Research Working Paper Series 3757, The World Bank.
- Das, Jishnu & Quy-Toan Do & Ozler, Berk, 2004. "Conditional cash transfers and the equity-efficiency debate," Policy Research Working Paper Series 3280, The World Bank.
- Jeffrey A. Frankel & Andrew K. Rose, 2000. "Estimating the Effect of Currency Unions on Trade and Output," NBER Working Papers 7857, National Bureau of Economic Research, Inc.
- Robert C. Feenstra & James R. Markusen & Andrew K. Rose, 2001. "Using the gravity equation to differentiate among alternative theories of trade," Canadian Journal of Economics, Canadian Economics Association, vol. 34(2), pages 430-447, May.
- Sophie Chauvin & Guillaume Gaulier, 2002. "Regional Trade Integration in Southern Africa," Working Papers 2002-12, CEPII research center.
- Bergstrand, Jeffrey H, 1985. "The Gravity Equation in International Trade: Some Microeconomic Foundations and Empirical Evidence," The Review of Economics and Statistics, MIT Press, vol. 67(3), pages 474-81, August.
- Jacob Wanjala Musila, 2005. "The Intensity of Trade Creation and Trade Diversion in COMESA, ECCAS and ECOWAS: A Comparative Analysis," Journal of African Economies, Centre for the Study of African Economies (CSAE), vol. 14(1), pages 117-141, March.
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