X hits on this document

PDF document

New York City Transit Hybrid and CNG Transit Buses: Interim Evaluation Results - page 25 / 64

158 views

0 shares

0 downloads

0 comments

25 / 64

Figure 6. Hybrid Traction Battery Conditioning Unit

Implementation Experience

The discussion in this section is based on overall fleet level results of mileage accumulation and roadcalls (RCs) for the CNG and hybrid bus fleets—260 CNG buses and 125 hybrid buses. NYCT has treated both of these fleets as standard buses for service. The depots have not been given special treatment for meeting pullout requirements for service.

For each study group (CNG and hybrid), several topics are covered. They include:

  • Background on NYCT expectations

  • Bus delivery

  • Total mileage accumulation from March 2003 through May 2005 for CNG and March

2004 through May 2005 for hybrid

  • Average monthly mileage per bus

  • Miles between roadcalls (MBRC) for all RCs and for propulsion-related only

  • Fleet issues and warranty maintenance campaigns

NYCT has three standard expectations and measures for transit bus operations. They are availability, reliability, and recovery time.

  • Availability—This measure, which should be 85% or above, allows for scheduled and some unscheduled maintenance for the bus. Buses that fall below the 85% availability can cause problems with having enough buses to make service.

  • Reliability—The measure should be above 4,000 MBRC for all RCs.

  • Recovery time—Buses should not be out of service for more than three days for any maintenance action (or anything else).

20

Document info
Document views158
Page views158
Page last viewedThu Dec 08 08:40:47 UTC 2016
Pages64
Paragraphs2744
Words18459

Comments