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E-mail: wangyue20090024@163.com 2 Ph.D candidate, College of Civil and Traffic Engineering, Hehai University, Xikang Road 1#, Nanjing, Jiangsu P.R.
In the data analysis module, it can evaluate the bridge safety and generate testing report through the comparison of the corresponding curves between the displacement and working positions.
It is an important indicator reflecting the bridge structural safety.
References [1] PDA—Based Field Data Collection For Pontis[C].International Bridge Conference，Pittsburgh, 1995：342-346 [2] PDA systems for injection moulding plants, Kunststoffe-German Plastics, v81,n6, Jun, 1991, p1510-1519
[3] Chuangjing Wang,Dongya Hou,”The Development of Surveying Program Based on PDA”[J].Surveying bulleting,2003,29:42-43 [4] Huaizhi Gao, Junjie Wang “Bridge Detection and Application Appraisal Condition's Research ”[J] World Seismic Engineering Journal 2000.16 (2): 57-64

A Factor-of-Safety Based Limit State Equation for Slope Stability From the limit equilibrium principle, a slope is in a limit equilibrium state when the factor of safety F equals 1.0.
Hoek: International Journal of Rock Mechanics & Mining Sciences, Vol. 12 (1990): 227-229
Duncan: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 126 (2000): 307-316
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Tan: Journal of Chongqing University (Natural Science Edition), Vol. 24 (2001): 40-44 (in Chinese)

The American Journal of Sports Medicine, 19(6)(1991): 596-600
Chinese Journal of SPorts Medicine, 25(5)( 2006): 560-563
Journal of Biomechanics, 34(9)( 2001): 1135-1143
Proceedings of 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems.
Proceedings of the 2003 IEEE/ASME International Conference on Advanced Intelligent Mechatronics.

Smart city [4] will cover every aspects of city which include smart traffic, smart public safety, smart logistics, smart health service, smart environment protection, smart manufacturing, smart public service etc.
Journal of Dissent. 2009,56(3) : 27-34
IBM Journal of Research and Development, 2011,55: 15:1-15:10
International Journal of Innovation and Regional Development. 2009, 1(4):405-422
Proceedings of 2010 International Conference on Future Information Technology, Changsha, 230-234.

Expressway widened engineering is an effective method of solving the problem of traffic jam in some area.
Journal of Northeastern highway, Vol. 21(2002), p. 11-14.
In: Proceedings of International Deep Foundation Congress, Geotechnical Special Publication No. 116-Deep Foundations 2002.
Canadian Geotechnical Journal, Vol. 42(2005), p.1145-1159
Chinese Journal of Rock Mechanics and Engineering, Vol. 27(2008), p.309-315.

Abstract Generally, vehicle safety is a vital issue in the field of automobile industry.
Introduction Nowadays, improving the crashworthiness of vehicles is considered to be one of the main concerns in traffic safety [1].
Thus one can suggest ribbed structures to improve the occupant safety.
Hopperstad, Static and dynamic axial crushing of square thin-walled aluminum extrusions, International journal on impact engineering, 18 (7-8), pp 949-68
[5] Tadaharu Adachi, Atsuo Tomiyama, Wakako Araki, Akihiko Yamaji, Energy absorption of a thin walled cylinder with ribs subjected to axial impact, International journal of impact engineering, 35 (2008) 65-79

Introduction With the development of economy and city construction, it is effective method by building the subway to relieve urban traffic congestion.
The Xi’an Subway Line 2 tunnel goes beneath the ancient Xi’an City Wall to reduce the traffic congestion in Xi’an city.
Bored tunneling in the urban environment[C]//Proceedings of the Fourteenth International Conference on Soil Mechanics and Foundation Engineering.
Canadian Geotechnical Journal, (1983) ,20(8):11－22
Journal of Rock Mechanics and Engineering, (2002), 21(3): 388－392.

This will make sure the flood is drained in time, water level is regulated, and the safety of passing-by ships.
However, this problem can be solved by traffic control.
Journal of Hydroelectric Engineering, 2009 (8):13-18 ( In Chinese) [6] NIUXin-qiang SONG Wei-bang.
International Journal of Limnology, 2013, 49:51–63 [12] Zhen Wen, Li Chaoxiong.
Journal of Water Resources and Architectural Engineering, 2012, 10(3): 96-100 ( In Chinese)

Research on the measurement error of portable braking performance tester Chao Wei 1, 2,a, Miaoxin Nie 2 ,b 1School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, China 2 Zhejiang Industry & Trade Professional College, Wenzhou, China a523970971@qq.com, bwcdgtyson@163.com Keywords: Portable braking performance tester, automobile, brake, error Abstract.
Many vehicles having the traffic accident need to identify the vehicle braking performance, and the identification results tend to be the basis for accident responsibility confirmation.
Journal of Tianjin University of Technology, 2007, 37(2): 195-197 (Ch)
[2] Comeau JL， German A， Floyd D; Comparison of Crash Pulse Data from Motor Vehicle Event Data Recorders and Laboratory Instrumentation; Canadian Multidisciplinary Road Safety Conference XIV; (June 2004) [3] Chidester AB， Hinch J and Roston TA; Real World Experience With Event Data Recorders;17th International Technical Conference on the Enhanced Safety of Vehicles; Paper no. 247(2001) [4] GB／T19056—2003，vehicle travelling data recorder[S] [5]　LPC2132/2138 User Manual (preliminary release) [EB].Philips Semiconductors, 2004 [6]　MMA7260-1.5g-6g Three Axis Low-g Micro machined Accelerometer-Motorola, Inc [7] German A, Comeau J-L, Monk B, McClafferty K, Tiessen P and Chan J; The Use of Event Data Recorders in the Analysis of Real-World Crashes; Proc.CMRSC-XII; June 10-13, 2001; London, Ontario
SAE Transaction, 1987, 96: 175~190 [12] Wright Peter G，The analysis of accident data recorder(ADR) data informula[J] .SAE,2000, (1) [13] HUANG Tian Application method of GPS in speed data collection Journal of Hunan Institute of Science and Technology (Natural Sciences) Mar．2005 [14] P.

Maintaining the smooth flow of traffic, the test adopts random ambient vibration contained random traffic flow and pulsation of the earth.
In practice, a monitoring program can be set in such a way that when the GFI increases beyond a standard safety threshold, a major investigation will be conducted to strengthen the bridge, and thus restore the safety margin of the bridge.
References [1] Anun Patjawit and Worsak Kanok-Nukulchai: submitted to Journal of Structural Engineering.
[2] Raghavendrachar and M, Aktan AE: submitted to Journal of Structural Engineering (1995)
[3] Allemang R J and Brown D L, “A Correlation Coefficient for Modal Vector Analysis,” in the 1st International Modal Analysis Conference.