a γ A km /10 2 km 2 L γ A = L /A 1 γ P km / 10 4 L 3 γ P = L /P 2 γ G km / 10 8 CNY γ G = L /GNP

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1 Journal of Highway and Transportation Research and Development Vol. 29 No. 8 Aug doi /j. issn U A Theory and Method of Mid-term Evaluation of Freeway Network Planning WANG Haixia LU Wei LIU Yang PANG Qingge ZHAO Kun China Academy of Transportation Sciences Beijing China Abstract The theory and method of mid-term evaluation of freeway network planning was investigated from the aspects of level of technical services economic and social situation and environmental impact. The technical evaluation was conducted from the aspects of network performance and traffic quality. The evaluation indexes for network performance were freeway network density and connectivity. The evaluation indexes for traffic quality were load degree and mileage congestion rate. The benefit was evaluated from the aspects of financial benefit and social and economic benefits. The evaluation methods include input-output method system dynamics model investment multiplier method and production function method. The environmental assessment of freeway network was conducted from the aspects of resource consumption cost environmental governance cost environmental management cost and energy saving benefit. This paper both filled the research gap in related fields and laid a solid foundation for adjustment of freeway network planning which has important theoretical and practical significance. Key words traffic engineering freeway network planning mid-term evaluation technical evaluation benefit evaluation environmental assessment km km @ bjtu. edu. cn

2 a γ A km /10 2 km 2 L γ A = L /A 1 γ P km / 10 4 L 3 γ P = L /P 2 γ G km / 10 8 CNY γ G = L /GNP 3 γ T km / 10 4 t km 4 γ T = L /T 4 γ N km / 10 2 veh 1-2 γ N = L /N 5 A P GNP T N L

3 L /ξ c = 槡 A n 6 2 c L A n 2 ξ 2. 1 c c c % q i L i S = Q /C = 7 C i L i S Q C L i i q i - - i C i i P n L si = 100% 8 L i = / 100% 35% 25% 75% / 5 a 7. 05% P n L si 0. 9 L i i 1 CNY 3 CNY

4 GDP System Dynamics SD Fig. 1 Schematic diagram of economic contribution form B = V I - A - 1 Δγ 10 B Δγ V A I 10 K = ΔY /ΔX 12 B B MPC K ΔX ΔY ΔX MPC K = 1 / 1 - b b 0 < b < 1 B' = B MPC 11 2 GDP

5 = / = / 17 = ~ 18 C - D 3. 2 Y = AK α L β 13 Y K L A α β 10 1 Tinbergen Solow C - 2 D Y = A r t K α L β Y = A 0 e λt K α L β 14 r λ 3 Y = Ae λt G α K β L γ 15 Y t GDP λ G 3. 3 K M G L 3

6 8 117 References J CAO Xiangqian. The Study on the Theory and Method after the Evaluation of the Road Network J. Journal of China & Foreign Highway J ZHOU Wei XIANG Qianzhong. A Study on the Post - evaluation for the Arterial Highway Network Development Planning of Shaanxi Province J. Journal of Transportation Systems Engineering and Information Technology D CO 2 PENG Li. Study on the Evaluation Indices System and T i = kg CO 2 /kg Methods of Implement Decision-making of Road Network Plan D. Nanjing Southeast University D ZHU Hui. Study on Evaluation Methods for Regional N Fig. 2 Overall mid-term evaluation of freeway The New Situation to Highway Development N. China network planning Communications News D LI Cong. Research of Evaluation Index System for Freeway Network Planning Environmental Impact D. Dalin Dalian University of Technology Arterial Highway Network Planning D. Changchun Jilin University M PRC. Ministry of Transport. Compiling Approach to Road Network Planning M. Beijing Ministry of Transport of PRC J S CHEN Dexing SHI Xiaowu CHEN Huifang et al. Impact of Construction of Trunk Highway on Regional Economic Development J. Transportation Science & Technology 2010 S

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2012 年 6 月交通运输系统工程与信息 Journal of Transportation Systems Engineering and Information Technology Vol 郾 12 Sup. 1 June 2012 文章编号 : 1009 鄄 6744 (2012) Sup. 1 鄄 0086 鄄 05 * 张万安, 肖跃秀 ( 吉安