..............page:8-9,32
..............page:17-20,28
Study of Traffic Infrastructure Efficiency
yang libo1; 2; liu xiaoming3(1.traffic research center; beijing university of technology; beijing 100022 china; 2.safety and environment department; transport planning and research institute; ministry of communications; beijing 100029; china; 3.beijing transportation committee; beijing 100053; china)
..............page:10-13