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Since the 70's, with the development of modern science and technology and industry, the utilization of underground space gradually shifted to protect the environment, save energy, to solve the city traffic. 1.
Since 1977, these counties have held many international meetings about underground space.
The Moscow subway system is the highest city in the world passenger traffic volume, and it is famous for its high quality of construction and operation.
So far, the underground street had evolved to an interdependent underground complex including a variety of city function, such as traffic, commercial and other facilities.
（3）studying on the stability problem of underground structure and its safety still need to be strengthened.

(Bert) Bakker, in: A Particle System for Safety Verification of Free Flight in Air Traffic.
[7] Zhang Zhaoning, Wang Yiming: China Safety Science Journal Vol.22.No.10(2012), p.14
[8] Zhang Zhaoning, Zuo Jiangli: China Safety Science Journal Vol.22.No.8(2012), p.44
[11] Zhang Zhao-ning, Zuo Jiang-li,Lu Fei: International Refereed Journal of Engineering and Science.
[13] Zhai Wenpeng, Li Yafei:China Safety Science Journal Vol.23.No.10(2013), p.110

The results have value in the research and application of VANET to traffic management.
VANETs have been envisioned to be useful in road safety and many commercial applications.
The actual movement of people or vehicles is closely related with traffic road topology.
Activities and application of the vehicle to vehicle and vehicle to infrastructure communication to enhance road safety [ C] .
Johnson, “Modeling mobility for vehicular ad hoc networks,” in Proc. of the 2nd ACM International Workshop on Vehicular Ad Hoc Networks (VANET), Oct. 2004.

The safety issues cost most concerns in a traditional manual investigation process, in order to minimize this kind of risk this system is designed to undertake the whole investigation outside the traffic lane except the rutting depth.
The equipment moves along with the road shoulder, except rutting depth all investigation can be done outside the traffic lane.
Thus the safety problems were no longer an issue here.
The traditional manual investigation approach is tedious, inefficient, and also contains a safety problem.
Three-dimension infrared laser vision system for road sueface features analysis, Proceedings of SPIE-The international Society for Optical Engineering, 2000:801-808

Table2 Formal Safety Properties of TCAS No.
Formal Safety Properties No.
The 5th International Conference on Wireless Communications, Networking and Mobile Computing.
In Proceedings of the International Workshop on Software Technology and Engineering Practice (STEP 2003), 2003
Journal of Software, 16(7):pp.1210−1220, 2005

Any suspicious traffic on the local client does not recognize to be the first time to the background of cloud testing center, the use of cloud computing capabilities to detect quickly locate resolve security threats, and threats to security protocol features pushed to all clients or safety gateway, thereby making the entire cloud client and security gateway detection capability with this unknown threat, the client and the cloud coupling has been further strengthened.
References [1] Y Enzi CC, EI-Hoiydi A., Decotignie J.D., Peiris V, WiseNET: Journal of Nanjing University of Posts and Telecommunications, Vo1. 4 (2010) No. 26, p.20-29
[3] Fok CL, Li Changhong, etc.: First International Conference on Advances in Future Internet, Vo1. 34 (2009) No. 11, p. 1608-1618
[4] Sun Qibo: Journal of Anhui University of Technology, Vo1. 23 (2010) No. 26, p. 786-793
[5] Liu Jie, Li Shan: Journal of Wuhan Institute of Technology, Vo1. 31 (2007) No.27, p. 260-264.

With the smallest safety factor by 4.56.
People of Yogyakarta commonly uses city bus as public transportation that have so many lacks such as uncomfortable, traffic accident, traffic jam, pollution and cant operate for 24 hours in a day.
Maximum load on one part of the vehicle frame in the amount of 51.21 MPa with the minimum safety factor of 4,81.
Maximum load on one part of the vehicle frame in the amount of 5.93 MPa with the minimum safety factor of 15.
Maximum load on one part of the chassis frame in the amount of 36 MPa with the minimum safety factor of 7.61.

Study on Vehicle Hook Buffer Mechanism Based on Sequential Image Analysis Li Rui1, a, Xu Ping2, b, Zhong Yuanmu3,c and Liu Longxi4,d 1,2Key Laboratory for Traffic Safety on Track of Ministry of Education, Central South University, Changsha 410075, China 3,4CSR Qingdao Sifang Locomotive & Rolling Stock Co., Ltd., Qingdao 266111, China a565401560@qq.com, b 271789144@qq.com, czhongyuanmu@cqsf.com, dliulongxi@cqsf.com Keywords: Impact test; Sequential image analysis; Template matching method; Abstract.
Domestic and international sequential image processing procedures fails to correct the error introduced by the camera position at present and the obtained displacement is only apparent displacement.
Image Motion Analysis in Automotive Passive Safety Study [J].
Journal of Traffic and Transportation Engineering, 2006, (01):20-24
Journal of Northern Jiaotong University, 2002, 26(2): 20-24.

In Airport Movement Area Safety System, the geographic data and traffic data on surface were used to detect potential conflict, providing alert information for air traffic controller [9-11].
References [1] International Civil Aviation Organization, Advanced surface movement guidance and control systems (A-SMGCS) Manual, (2004)
[6] P C Roling, H G Visser, Optimal airport surface traffic planning using mixed-integer linear programming, International Journal of Aerospace Engineering, 2008, pp.1-11
[8] W M Hollister, Airport surface traffic automation study, DOT/FAA/PS-87/1, Washington D.C.: Federal Aviation Administration, (1988)
Ianniello, W Joseph, Airport Movement Area Safety System, Proceedings of 11th IEEE/AIAA Digital Avionics Systems Conference.

Introduction With the development of the city and the urban population increasing, the traffic problem is more and more serious, the subway is the important transportation way to solve the problem of big city traffic congestion [1, 2].
Therefore, research on the laws of the surface movement deformation, which has important implications for construction safety and building envelope stability [5].
[2] MARTOS F Concerning an approximate equation of the subsidence trough and its time factors[C] //International Strata Control Congress．Leipzig：[s.n.]， 1958：191-205
[5] LOGANATHANN，POULOS H Ct Analytical prediction fortunneling-induced ground movements in clays[J]．Journal of Geotechnical and Geoenvironmental Engineering，1998，124(9)：846-856
[7] HOCK E，BROWN E T．Underground excavation in rock[C]//Proceedings of the International Symposium on Weak Rock．London：Institute of Mining and Metallurgy，1980：67- 72．