RT-1 applies to car bodies for newly constructed light-rail vehicles and streetcars for transit passenger service. RT-1 defines requirements for the incorporation of passive safety design concepts related to the performance of the car body of light-rail vehicles in conditions such as collisions, so as to enhance occupant safety and control damage. RT-1 joins with RT-2-2014 Safety Standard for Structural Requirements for Heavy Rail Transit Vehicles, to serve as the first standards of their kind for North America. The result is a pair of uniform standards suitable for adoption by all levels of domestic jurisdiction, while providing state-of-the-art guidelines for other nations considering carbody standards for their rail-transit systems. Both Standards are also unique for utilizing Crash Energy Management (CEM) protocols. CEM represents the latest best-practices of design, testing, analysis and manufacture\u2014enhancing crashworthiness by assigning certain sections of the carbody the task of absorbing a portion of the energy of collision by crushing in a controlled manner. Proper application of CEM preserves occupant volume, while minimizing the consequences of occupant impacts with the vehicle interior. Production efficiencies may also be realized via CEM, although heightening passenger safety is the main intent. Intended for rail-transit carbody manufacturers and their suppliers of components and raw materials, as well as the owners and operators of rail-transit systems, plus all potential governing entities.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | COMMITTEE ROSTER <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | CORRESPONDENCE WITH THE RT COMMITTEE <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | SUMMARY OF CHANGES <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 1 SCOPE 1.1 Subjects Covered by This Standard 1.2 Subjects Not Addressed by This Standard 1.3 Effective Date 2 DEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 3 INTEROPERABILITY 3.1 Anticlimber and Coupler Interface 3.2 LRV and Streetcar Leading End Design for Protection of Street Vehicles 4 STRUCTURAL REQUIREMENTS 4.1 Welding 4.2 Articulation 4.3 Design Parameter Tolerances 4.4 Demonstration of Strength and Structural Stability 4.5 Truck-to-Carbody Attachment <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.6 Crashworthiness 5 DESIGN LOADS AND ASSESSMENT CRITERIA <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6 COUPLER SYSTEM 6.1 Characteristics 7 MATERIAL 7.1 Austenitic Stainless Steel 7.2 Low Alloy High Tensile Steel 7.3 Aluminum 7.4 Static Strength 7.5 Nonmetallic Materials 8 CRASH ENERGY MANAGEMENT CEM 9 ANALYSIS 9.1 Structural Sketch <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 9.2 Linear-Elastic Stress Analysis 9.3 Crashworthiness Analysis <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 10 TESTS 10.1 Objectives 10.2 General 10.3 Proof Load Tests 10.3.1 Test Procedures. 10.3.2 Vertical Load 10.3.2.1 Test Description. <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 10.3.2.2 Test Criteria. 10.3.3 Compression Loads 10.3.3.1 Test Description. 10.3.3.2 Test Criteria. 10.3.4 Collision Post Collision Wall and Corner Post Loads 10.3.4.1 Test Description. <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 10.3.4.2 Test Criteria. 10.4 Crash Energy Management Tests 10.4.1 Test Description. 10.4.2 Test Criteria. 10.5 Coupling Impact Tests 11 REFERENCES <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Tables Table 1 Structural Load Requirements for LRVs <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Table 2 Structural Load Requirements for Streetcars <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Table 3 Crashworthiness for LRVs Table 4 Crashworthiness for Streetcars <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" ASME RT-1 – 2015: Safety Standard for Structural Requirements for Light Rail Vehicles<\/b><\/p>\n |