Volume 21 Issue 1
Aug.  2021
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SHI Huai-long, LUO Ren, ZENG Jing. Review on domestic and foreign dynamics evaluation criteria of high-speed train[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 36-58. doi: 10.19818/j.cnki.1671-1637.2021.01.002
Citation: SHI Huai-long, LUO Ren, ZENG Jing. Review on domestic and foreign dynamics evaluation criteria of high-speed train[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 36-58. doi: 10.19818/j.cnki.1671-1637.2021.01.002

Review on domestic and foreign dynamics evaluation criteria of high-speed train

doi: 10.19818/j.cnki.1671-1637.2021.01.002
Funds:

National Natural Science Foundation of China 51805451

National Natural Science Foundation of China U2034210

Sichuan Science and Technology Plan Project 2020YJ0074

Independent Subject of State Key Laboratory of Traction Power 2021TPL_T05

Independent Subject of State Key Laboratory of Traction Power 2019TPL_T15

More Information
  • Author Bio:

    SHI Huai-long(1986-), male, assistant professor, PhD, shi@swjtu.edu.cn

    ZENG Jing(1963-), male, professor, PhD, zeng@swjtu.edu.cn

  • Received Date: 2020-08-31
  • Publish Date: 2021-08-27
  • The evaluation content, evaluation method, evaluation index and limit value involved in the dynamics performance assessment criteria were reviewed for high-speed trains. The criteria analysis and their comparisons were carried out regarding of hunting motion stability, derailment safety and ride quality, including legal documents, industry standards and technical specifications, for instance, ISO series, UIC series, EN series, TSI series, FRA series, APTA series and GB series standards, etc. Deficiencies or suggestions for improvement were pointed out. Detailed comparison among representative dynamics criteria were carried out, including new and old versions of the national standard Specification for Dynamic Performance Assessment and Testing Verification of Rolling Stock (GB/T 5599), the International Railway Union Testing and Approval of Railway Vehicles from the Point of View of Their Dynamic Behaviour—Safety—Track Fatigue—Ride Quality (UIC 518), and the Russian Railway Multiple Units—Durability and Dynamics Requirements (GOST/R 55495), etc. Applications of the dynamic response and quasi-static performance evaluation criteria under ideal track excitations specified by the North American FRA series and APTA series were demonstrated. Analysis result shows that the hunting motion stability is evaluated by the lateral acceleration of frame, frame force or the wheel/rail force, while the suitable method should be selected for the numerical simulation, bench test and on-track test. Regarding the long-term service dynamics performance of high-speed trains in China, it is recommended to set the frequency bandwidth of filtering as 0.5-10.0 Hz, the amplitude limit as 8 m·s-2 below 7 Hz and 10 m·s-2 for 7-9 Hz, the continuous over-limit times as 10 times, 2 s or 100 m in case of the high-speed trains are operated at 400 km·h-1 and above. For the safety assessment of rail climbing derailment, the existing standards are based on the wheel/rail force and wheel lift for dynamic and static evaluations, but there are differences in the index limit, time duration or running distance of action. It is recommended to use the derailment coefficient and wheel unloading coefficient to form a joint evaluation method. The new version of GB/T 5599 deletes the overturning coefficient and wheel/rail lateral force indicators, relaxes the limit of wheel unloading coefficient, and remains the wheel/axle lateral force limit unchanged. The evaluation method of GOST/R 55495 does not distinguish the vehicle types, and uses the frame force instead of wheel/rail force to evaluate the operational safety. A same frequency weighting is used for the calculation of lateral and vertical ride quality index, and the weighting bandwidth as well as the amplitude of low frequency band are significantly larger than that of GB/T 5599. GOST/R 55495 does not grade the ride quality index. The operational safety index and ride quality index of CR400BF Fuxing high-speed train both meet the requirements of GB/T 5599 and GOST/R 55495. The North American criterion was employed to analyze the dynamic response of a 160 km·h-1 passenger car under ideal track excitations. Among the eight types of irregularities, the repeated surface irregularities and single surface irregularities are relatively harsh. Among the six evaluation indicators, the wheel unloading coefficient and the vertical acceleration of car body easily exceed the limits. 9 tabs, 22 figs, 67 refs.

     

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  • [1]
    翟婉明. 货物列车动力学性能评定标准的研究与建议方案(待续)——防脱轨安全性评定标准[J]. 铁道车辆, 2002, 40(1): 13-18. https://www.cnki.com.cn/Article/CJFDTOTAL-TDCL200201003.htm

    ZHAI Wan-ming. Research on the dynamics performance evaluation standard for freight trains and the suggested schemes (to be continued)—safety evaluation standard for prevention of derailment[J]. Rolling Stock, 2002, 40(1): 13-18. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDCL200201003.htm
    [2]
    翟婉明. 货物列车动力学性能评定标准的研究与建议方案(续一)——轮轨横向力评定标准[J]. 铁道车辆, 2002, 40(2): 9-10, 25. doi: 10.3969/j.issn.1002-7602.2002.02.003

    ZHAI Wan-ming. Research on the dynamics performance evaluation standard for freight trains and the suggested schemes (1st part continued)—evaluation standard for lateral wheel-rail force[J]. Rolling Stock, 2002, 40(2): 9-10, 25. (in Chinese) doi: 10.3969/j.issn.1002-7602.2002.02.003
    [3]
    翟婉明. 货物列车动力学性能评定标准的研究与建议方案(续完)——轮轨垂向力及车钩力的评定标准[J]. 铁道车辆, 2002, 40(3): 10-13. doi: 10.3969/j.issn.1002-7602.2002.03.004

    ZHAI Wan-ming. Research on the dynamics performance evaluation standard for freight trains and the suggested schemes (last part continued)—evaluation standard for vertical wheel-rail force and coupler force[J]. Rolling Stock, 2002, 40(3): 10-13. (in Chinese) doi: 10.3969/j.issn.1002-7602.2002.03.004
    [4]
    吕可维, 邵文东. 快捷铁路货车动力学性能考核评价标准探讨[C]//任玉君, 田葆栓. 中国铁道学会车辆委员会快捷货车转向架技术交流会论文集. 大连: 中国铁道学会, 2015: 62-67.

    LYU Ke-wei, SHAO Wen-dong. Discussion on evaluation standards for dynamic performance of express railway freight cars[C]//REN Yu-jun, TIAN Bao-shuan. Proceedings of Technical Exchange Conference on Fast Freight Car Bogies of the Vehicle Committee of China Railway Society. Dalian: China Railway Society, 2015: 62-67. (in Chinese)
    [5]
    贾璐. 高速车辆动力学性能评价方法研究[D]. 成都: 西南交通大学, 2011.

    JIA Lu. Study on the methods of dynamic performance evaluation of high speed vehicles[D]. Chengdu: Southwest Jiaotong University, 2011. (in Chinese)
    [6]
    贾璐, 曾京, 池茂儒. 车辆系统横向运动稳定性评判的数值仿真研究[J]. 铁道车辆, 2011, 49(9): 1-7. doi: 10.3969/j.issn.1002-7602.2011.09.001

    JIA Lu, ZENG Jing, CHI Mao-ru. The numerical simulation research on judgment of lateral motion stability of the vehicle system[J]. Rolling Stock, 2011, 49(9): 1-7. (in Chinese) doi: 10.3969/j.issn.1002-7602.2011.09.001
    [7]
    POLACH O. On non-linear methods of bogie stability assessment using computer simulations[J]. Journal of Rail and Rapid Transit, 2006, 220: 13-27. doi: 10.1243/095440905X33251
    [8]
    DONG Hao, WANG Qun-sheng. On the critical speed, supercritical bifurcation, and stability problems of certain type of high-speed rail vehicle[J]. Shock and Vibration, 2017, 2017: 1-9. http://www.ingentaconnect.com/content/rsoc/10709622/2017/00002017/00000004/art00026
    [9]
    NADAL M J. Théorie de la stabilité des locomotives, Part Ⅱ: mouvement de lacet[J]. Annales des Mines, 1896, 10: 232-255.
    [10]
    WU H M, ELKINS J. Investigation of wheel flange climb derailment criteria[R]. Washington DC: Association of American Railroads, 1999.
    [11]
    KARMEL A, SWEET L M. Wheelset mechanics during wheel climb derailment[J]. Journal of Applied Mechanics, 1984, 51(5): 680-686. http://adsabs.harvard.edu/abs/1984JAM....51..680K
    [12]
    SWEET L M, KARMEL A. Evaluation of time-duration dependent wheel load criteria for wheel climb derailment[J]. Journal of Dynamic Systems, Measurement and Control, 1981, 103(2): 219-227. http://www.researchgate.net/publication/245372300_Evaluation_of_Time-Duration_Dependent_Wheel_Load_Criteria_for_Wheelclimb_Derailment
    [13]
    WEINSTOCK H. Wheel climb derailment criteria for evaluation of rail vehicle safety[C]//ASME. Proceedings of American Society of Mechanical Engineers (ASME) Winter Annual Meeting. New York: ASME, 1984: 1-7.
    [14]
    ELKINS J, WU H M. Angle of attack and distance-based criteria for flange climb derailment[J]. Vehicle System Dynamics, 2000, 33(2): 293-305. doi: 10.1080/00423114.1999.12063089
    [15]
    BRAGHIN F, BRUNI S, DIANA G. Experimental and numerical investigation on the derailment of a railway wheelset with solid axle[J]. Vehicle System Dynamics, 2006, 44(4): 305-325. doi: 10.1080/00423110500337494
    [16]
    BARBOSA R S. A 3D contact force safety criterion for flange climb derailment of a railway wheel[J]. Vehicle System Dynamics, 2004, 42(5): 289-300. doi: 10.1080/0042311042000266711
    [17]
    曾庆元, 向俊, 娄平. 车桥及车轨时变系统横向振动计算中的根本问题与列车脱轨能量随机分析理论[J]. 中国铁道科学, 2002, 23(1): 1-10. doi: 10.3321/j.issn:1001-4632.2002.01.001

    ZENG Qing-yuan, XIANG Jun, LOU Ping. Fundamental problems in calculation of transverse vibration of train-bridge and train-track time-varying system and theory of energy random analysis for train derailment[J]. China Railway Science, 2002, 23(1): 1-10. (in Chinese) doi: 10.3321/j.issn:1001-4632.2002.01.001
    [18]
    俞展猷, 李富达, 李谷. 车轮脱轨及其评价[J]. 铁道学报, 1999, 21(3): 33-38. doi: 10.3321/j.issn:1001-8360.1999.03.007

    YU Zhan-you, LI Fu-da, LI Gu. Wheel derailment and its evaluation[J]. Journal of China Railway Society, 1999, 21(3): 33-38. (in Chinese) doi: 10.3321/j.issn:1001-8360.1999.03.007
    [19]
    翟婉明, 陈果. 根据车轮抬升量评判车辆脱轨的方法与准则[J]. 铁道学报, 2001, 23(2): 17-26. https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB200102004.htm

    ZHAI Wan-ming, CHEN Guo. Method and criteria for evaluation of wheel derailment based on wheel vertical rise[J]. Journal of China Railway Science, 2001, 23(2): 17-26. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB200102004.htm
    [20]
    ZENG Jing, GUAN Qing-hua. Study on flange climb derailment criteria of a railway wheelset[J]. Vehicle System Dynamics, 2008, 46(3): 239-251. doi: 10.1080/00423110701313989
    [21]
    曾京, 关庆华. 铁道车辆运行安全评判的轮对爬轨脱轨准则[J]. 交通运输工程学报, 2007, 7(6): 1-5. https://www.cnki.com.cn/Article/CJFDTOTAL-JYGC200706003.htm

    ZENG Jing, GUAN Qing-hua. Wheelset climb derailment criteria for evaluation of railway vehicle running safety[J]. Journal of Traffic and transportation Engineering, 2007, 7(6): 1-5. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JYGC200706003.htm
    [22]
    关庆华, 曾京, 陈哲明. 考虑冲角影响的改进脱轨准则[J]. 中国铁道科学, 2009, 30(3): 74-80. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK200903015.htm

    GUAN Qing-hua, ZENG Jing, CHEN Zhe-ming. Improving the derailment criteria by taking the impact of attack angle into account[J]. China Railway Science, 2009, 30(3): 74-80. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK200903015.htm
    [23]
    魏来, 曾京, 邬平波, 等. 基于轮对模型的铁道车辆脱轨安全性评估[J]. 铁道学报, 2015, 37(9): 25-31. https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB201509004.htm

    WEI Lai, ZENG Jing, WU Ping-bo, et al. Derailment safety evaluation for railway vehicles based on wheelset model[J]. Journal of the China Railway Society, 2015, 37(9): 25-31. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB201509004.htm
    [24]
    金学松, 凌亮, 肖新标, 等. 复杂环境下高速列车动态行为数值仿真和运行安全域分析[J]. 计算机辅助工程, 2011, 20(3): 29-41, 59. https://www.cnki.com.cn/Article/CJFDTOTAL-JSFZ201103007.htm

    JIN Xue-song, LING Liang, XIAO Xin-biao, et al. Dynamic behaviour numerical simulation and safety boundary analysis for high speed trains in severe environments[J]. Computer Aided Engineering, 2011, 20(3): 29-41, 59. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JSFZ201103007.htm
    [25]
    沈钢, 王福天. 轮对蛇行失稳导致脱轨的机理研究[J]. 上海铁道大学学报, 2000, 21(8): 1-6. https://www.cnki.com.cn/Article/CJFDTOTAL-SHTY200008000.htm

    SHEN Gang, WANG Fu-tian. An theoretical investigation on the derailment index for high-speed railway vehicle[J]. Journal of Shanghai Tiedao University, 2000, 21(8): 1-6. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SHTY200008000.htm
    [26]
    MATSUDAIRA T. Dynamics of high speed rolling stock[J]. Railway Technical Research Institute, Quarterly Reports, 1966, 7(1): 45-97.
    [27]
    49CFR 213, FRA regulations: 2003, transportation, Part 213—track safety standards[S].
    [28]
    BS 6841: 1987, measurement and evaluation of human exposure to whole-body mechanical vibration and repeated shock[S].
    [29]
    ISO 2631-1: 1997, mechanical vibration and shock—evaluation of human exposure to whole-body vibration—Part 1: general requirements[S].
    [30]
    JIANG Yan-ran, CHEN B K, THOMPSON C. A comparison study of ride comfort indices between Sperling's method and EN 12299[J]. International Journal of Rail Transportation, 2019, 7(4): 279-296. doi: 10.1080/23248378.2019.1616329?tab=permissions&scroll=top
    [31]
    DENG Chen-xin, ZHOU Jin-song, THOMPSON D, et al. Analysis of the consistency of the Sperling index for rail vehicles based on different algorithms[J]. Vehicle System Dynamics, 2021, 59(2): 313-330. doi: 10.1080/00423114.2019.1677923?cookieSet=1&src=recsys
    [32]
    LIU C, THOMPSON D, GRIFFIN M J, et al. Effect of train speed and track geometry on the ride comfort in high-speed railways based on ISO 2631-1[J]. Journal of Rail and Rapid Transit, 2020, 234(3): 765-778. http://www.researchgate.net/publication/335191153_Effect_of_train_speed_and_track_geometry_on_the_ride_comfort_in_high-speed_railways_based_on_ISO_2631-1
    [33]
    TSI RST HS 232: 2008, concerning a technical specification for interoperability relating to 'rolling stock' sub-system of the trans-European high-speed rail system[S].
    [34]
    TSI LOC and PAS 1302: 2014, concerning a technical specification for interoperability relating to the 'rolling stock—locomotives and passenger rolling stock' subsystem of the rail system in the European Union[S].
    [35]
    TSI INF 1299: 2014, the technical specifications for interoperability relating to the 'infrastructure' subsystem of the rail system in the European Union[S].
    [36]
    DENG Xiao-jun, SHI Huai-long. European high-speed bogie technology review[J]. International Journal of Vehicle Design, 2019, 79(1): 43-62. http://www.researchgate.net/publication/335051348_European_high-speed_bogie_technology_review/download
    [37]
    UIC 518: 2009, testing and approval of railway vehicles from the point of view of their dynamic behaviour-safety-track fatigue-ride quality, 4th edition[S].
    [38]
    UIC 515-1: 2003, passenger rolling stock-trailer bogies-running gear-general provisions applicable to the components of trailers bogies, 2nd edition[S].
    [39]
    UIC Kodex 515-1: 1984, reisezugwagen laufwerke (1)[S].
    [40]
    GOST/R 55495: 2013, railway multiple units—durability and dynamics requirements, standarty state standard GOST, Russian[S].
    [41]
    GB/T 5599—2019, 机车车辆动力学性能评定及试验鉴定规范[S].

    GB/T 5599—2019, specification for dynamic performance assessment and testing verification of rolling stock[S]. (in Chinese)
    [42]
    49CFR 238, FRA regulations: 2003, transportation, Part 238— passenger equipment safety standards[S].
    [43]
    EN 14363: 2016, railway applications testing for the acceptance of running characteristics of railway vehicles testing of running behavior and stationary tests[S].
    [44]
    西南交通大学. 时速400公里动车组转向架失稳监控技术研究报告[R]. 成都: 牵引动力国家重点实验室, 2018.

    Southwest Jiaotong University. Research report on monitoring technology for bogie instability of 400 km/h EMU[R]. Chengdu: State Key Laboratory of Traction Power, 2018. (in Chinese)
    [45]
    WILSON N, SHU X G, WU H M, et al. Distance-based flange climb L/V criteria[R]. Washington DC: Association of American Railroads/Transportation Technology Center, 2004.
    [46]
    关庆华, 曾京. 轮轨横向碰撞引起的脱轨研究[J]. 振动与冲击, 2009, 28(12): 38-42, 201. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDCJ200912011.htm

    GUAN Qing-hua, ZENG Jing. Study on derailment induced by lateral impact between wheel and rail[J]. Journal of Vibration and Shock, 2009, 28(12): 38-42, 201. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZDCJ200912011.htm
    [47]
    M1001. AAR mechanical division: 1987-1993, manual of standards and recommended practices, Section C—Part Ⅱ. Vol. 1, ChapterXI, Section 11.5.2 track-worthiness criteria[S].
    [48]
    ELKINS J, WU H M. New criteria for flange climb derailment[C]//ASME. IEEE/ASME Joint Railroad Conference. New York: ASME, 2000: 1-7.
    [49]
    MIYAMOTO M. Mechanism of derailment phenomena of railway vehicles[J]. Railway Technical Research Institute, Quarterly Reports, 1996, 37(3): 147-155. http://www.researchgate.net/publication/294417478_Mechanism_of_derailment_phenomena_of_railway_vehicles
    [50]
    JIN X S, XIAO X B, LING L, et al. Study on safety boundary for high-speed train running in severe environments[J]. International Journal of Rail Transportation, 2013, 1(1/2): 87-108. doi: 10.1080/23248378.2013.790138
    [51]
    APTA PR-M-S-017-06: 2007, standard for definition and measurement of wheel tread taper[S].
    [52]
    曾京. 轮对稳态脱轨准则的研究[J]. 铁道学报, 1999, 21(6): 15-19. https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB199906005.htm

    ZENG Jing. Steady-state derailment criteria of a railway wheelset[J]. Journal of the China Railway Society, 1999, 21(6): 15-19. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB199906005.htm
    [53]
    WEI Lai, ZENG Jing, WU Ping-bo, et al. Indirect method for wheel-rail force measurement and derailment evaluation[J]. Vehicle System Dynamics, 2014, 52(12): 1622-1641. http://www.ingentaconnect.com/content/tandf/vesd/2014/00000052/00000012/art00004
    [54]
    魏来. 高速列车相关运行安全性问题研究[D]. 成都: 西南交通大学, 2015.

    WEI Lai. Study on related running safety problems for high speed trains[D]. Chengdu: Southwest Jiaotong University, 2015. (in Chinese)
    [55]
    石田, 弘明, 刘克鲜. 铁道车辆脱轨安全性评定标准[J]. 国外铁道车辆, 1996(5): 28-35. https://www.cnki.com.cn/Article/CJFDTOTAL-GWTD605.007.htm

    SHI Tian, HONG Ming, LIU Ke-xian. Safety evaluation standard for railway vehicle derailment[J]. Foreign Rolling Stock, 1996(5): 28-35. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GWTD605.007.htm
    [56]
    GM/RT 2141: 1998, resistance of railway vehicles to derailment and roll-over[S].
    [57]
    AS 7509.2: 2009, railway rolling stock-dynamic behaviour—Part 2: freight rolling stock[S].
    [58]
    张文龙, 吕可维. 基于澳大利亚标准的铁路货车动力学性能仿真分析[J]. 机械工程师, 2013(11): 108-110. https://www.cnki.com.cn/Article/CJFDTOTAL-JXGU201311061.htm

    ZHANG Wen-long, LYU Ke-wei. Simulation and analysis of railway wagon dynamics behavior according to Australian standard[J]. Mechanical Engineer, 2013(11): 108-110. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXGU201311061.htm
    [59]
    UIC 513: 1994, guidelines for evaluating passenger comfort in relation to vibration in railway vehicles[S].
    [60]
    EN 12299: 2009, railway applications-ride comfort for passengers-measurement and evaluation[S].
    [61]
    刘春艳, 吕晓辰. 基于美国CFR标准的地铁车辆动力学分析[J]. 大连交通大学学报, 2019, 40(2): 104-108. https://www.cnki.com.cn/Article/CJFDTOTAL-DLTD201902025.htm

    LIU Chun-yan, LYU Xiao-chen. Dynamics simulation of metro vehicles based on US CFR standard[J]. Journal of Dalian Jiaotong University, 2019, 40(2): 104-108. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DLTD201902025.htm
    [62]
    HUO W B, YANG S, WU P B. Analysis of vehicle dynamic performance under MCAT excitation[C]//IOP. 2019 International Conference on Optoelectronic Science and Materials. Hefei: IOP, 2020: 1-6.
    [63]
    侯明林, 池茂儒. 特征谱下高速客车动力学性能分析[J]. 机械工程与自动化, 2016(5): 34-36. https://www.cnki.com.cn/Article/CJFDTOTAL-SXJX201605012.htm

    HOU Ming-lin, CHI Mao-ru. Analysis of dynamic performance of high-speed passenger train on track irregularity[J]. Mechanical Engineering and Automation, 2016(5): 34-36. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SXJX201605012.htm
    [64]
    GM/RC 2641: 2009, recommendations for vehicle static testing, railway group recommendation, Issue 2[S].
    [65]
    石怀龙, 邬平波, 罗仁. 客车转向架回转阻力矩特性[J]. 交通运输工程学报, 2013, 13(4): 45-50. https://www.cnki.com.cn/Article/CJFDTOTAL-JYGC201304008.htm

    SHI Huai-long, WU Ping-bo, LUO Ren. Bogie rotation resistance torque characteristics of passenger car[J]. Journal of Traffic and Transportation Engineering, 2013, 13(4): 45-50. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JYGC201304008.htm
    [66]
    APTA RP-M-RP-009-98: 1999, recommended practice for new truck design[S].
    [67]
    APTA PR-M-S-014-06: 2007, standard for wheel load equalization of passenger railroad rolling stock[S].
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