THE COUPLING OF PROVEN RELIABILITY AND MODERN PERFORMANCE ON BOSTON'S NO. 4 AND NO. 12 RAPID TRANSIT CARS

With the advent of sophisticated, state-of-the-art transit systems, there appears to have arisen an attendant trade-off between reliability and performance. Typically, forced to prioritize, most operating properties will opt for reliability. Specification requirements for the new No. 4 and No. 12 MBTA rapid transit cars dictated the use of propulsion and braking systems whose reliability had been demonstrated throughout the years. The specification also required, however, the integration of these systems into a cohesive unit that exhibited modern day ride performance. This paper provides a brief description of each of the subject vehicles, and then traces the technical history of the endeavor to blend the electrical and pneumatic braking systems' tractive effort outputs into a uniform deceleration rate without the use of complex system feedback and interface networks.

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 35-40

Subject/Index Terms

Filing Info

  • Accession Number: 00316279
  • Record Type: Publication
  • Report/Paper Numbers: IEEE 80CH1567-7 IA Tech Paper
  • Files: TRIS
  • Created Date: Sep 16 1981 12:00AM