National Academies Press: OpenBook

Center Truck Performance on Low-Floor Light Rail Vehicles (2006)

Chapter: Appendix B - Glossary

« Previous: Appendix A - TCRP Research Project C-16 Scope of Work
Page 65
Suggested Citation:"Appendix B - Glossary." National Academies of Sciences, Engineering, and Medicine. 2006. Center Truck Performance on Low-Floor Light Rail Vehicles. Washington, DC: The National Academies Press. doi: 10.17226/14000.
×
Page 65
Page 66
Suggested Citation:"Appendix B - Glossary." National Academies of Sciences, Engineering, and Medicine. 2006. Center Truck Performance on Low-Floor Light Rail Vehicles. Washington, DC: The National Academies Press. doi: 10.17226/14000.
×
Page 66

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

65 AAR Association of American Railroads. ADA Americans With Disabilities Act 1991. Legis- lation regarding access to transit by persons with disabilities. AOA/Angle The angle between the track radial line and of Attack the centerline of the wheelset’s axle. This is the same as the angle between the axis of rota- tion of the wheelset and a line perpendicular to the track centerline (which is an alternative definition). APTA American Public Transportation Association. Axle Arrangements: 1 Two-wheel axle that is fixed in the truck frame. 1´ Two-wheel axle that can rotate within the truck frame. B Monomotor, four-wheel truck with fixed axles. B´ Monomotor, four-wheel truck with axles that can rotate within the truck frame. Bo Bimotor, four-wheel truck with fixed axles. Bo´ Bimotor, four-wheel truck with axles that can rotate within the truck frame. 2 Four-wheeled trailer truck with fixed axles. 2´ Four-wheeled trailer truck with axles that can rotate within the truck frame. Bochum Proprietary name for a resilient wheel that has a flexible web element between the axle and the rim. BOStrab German Transit Standards. Buff load The static longitudinal force that a rail vehi- cle must be capable of withstanding without permanent deformation to its primary structure. Category–Reference to definitions applied in TCRP Report 2: 1 Vehicles with conventional motor and trailer trucks throughout. 2 Vehicles with conventional motor and trailer trucks at ends but unconventional center trucks. 3 Vehicles with innovative motored and trailing running gear throughout Contact angle Angle of the plane of contact between the wheel and rail relative to the track plane. Contact stress The force acting per unit area at the point of contact between wheel and rail. Conicity The self-steering capability of a wheelset resulting from the taper on the wheel treads. dBA Decibels (Weighted) - Unit of noise measure- ment, weighted to represent sensitivity of human ear to sound. DBOM Design, Build, Operate and Maintain. EEF Einzelrad-Einzel-Fahrwerk wheelsets, self- steering and independently rotating wheels. Flange angle The angle between the contact face of the wheel face and a vertical line parallel with the back of the wheel. Flangeway The clearance between the gauge side of a rail and a restraining rail or the equivalent part of a girder rail or switch. FTA Federal Transit Administration. IRW Independently Rotating Wheels. A pair of wheels on a common axle that rotate inde- pendently of each other. L/V Ratio The ratio of lateral to vertical wheel/rail con- tact forces that influence derailment. LFLRV Low-Floor Light Rail Vehicle. LRT Light Rail Transit—refers to an operator or system using light rail vehicles. LRV Light rail vehicle. Kelsan Proprietary name of a type of grease applicator. KS Kinki Sharyo (vehicle supplier). PCC President’s Conference Committee (type of streetcar). A P P E N D I X B Glossary

Penn Pennsylvania Rail Road Station in Newark, New Jersey. PLF Partial Low Floor. Portec Proprietary name of a type of wayside grease applicator. REBS Proprietary name of a type of grease manu- factured in Germany. Rolling The deformation and damage on a wheel or Contact rail caused by the repetitive experience of Fatigue normal and tangential forces. S&C Switches and Crossings (Special Trackwork). TRIS Transportation Research Information Service. TTCI Transportation Technology Center, Inc. VDV German Public Transit Operator’s Association. Transit Authorities DART Dallas Area Rapid Transit. HBL Hudson Bergen Line (part of NJT). MAX Metropolitan Area Express (part of TriMet). MBTA Massachusetts Bay Transportation Authority, Boston, MA. NJT New Jersey Transit, Newark, NJ. RATP Parisian Autonomous Transportation System, Paris, France. SDT San Diego Transit, CA. SEPTA Southeastern Pennsylvania Transportation Authority, Philadelphia, PA. SNCF French National Railways. TriMet Tri-County Metropolitan Transportation Dis- trict, Portland, OR. TTC Toronto Transit Commission; Toronto, Ontario, Canada. UITP International Public Transport Association. VBZ Zurich Transportation Authority, Zurich, Switzerland. VDV German Association of Public Transport Operators. VTA Valley Transportation Authority, Santa Clara, CA. 66

Next: Appendix C - Vehicle Data »
Center Truck Performance on Low-Floor Light Rail Vehicles Get This Book
×
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

TRB's Transit Cooperative Research Program (TCRP) Report 114: Center Truck Performance on Low-Floor Light Rail Vehicles examines performance issues observed in the operation of low-floor light rail vehicle (LFLRV) center trucks (focusing on 70-percent low-floor vehicles), such as excessive wheel wear and noise and occasional derailments, and provides proposed guidance on how to minimize or avoid these issues. The report also includes suggestions on LFLRV specifications, maintenance, and design, as well as on related infrastructure design and maintenance, to maximize performance of these LFLRV center trucks.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  6. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  7. ×

    View our suggested citation for this chapter.

    « Back Next »
  8. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!