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New York City Transit Hybrid and CNG Transit Buses: Interim Evaluation Results - page 40 / 64

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  • Cab, body, and accessories—Includes body repairs following accidents, glass, and paint; cab and sheet metal repairs on seats and doors; and accessory repairs such as hubodometers and radios

  • Frame, steering, and suspension—Includes steering and suspension repairs

  • Brakes—Excludes regenerative braking for the hybrids, which is included in propulsion- related systems

  • Heating, ventilation, and air conditioning (HVAC)

  • Axles, wheels, and drive shaft

  • Lighting

  • Air System, general

  • Hydraulics

Table 13 summarizes the top five maintenance cost categories from the total maintenance breakdown for each study group. Each of the study groups has propulsion-related, cab, body, and accessories, and HVAC costs in the top five. The other two categories that show up in the top five are brakes or frame, steering, and suspension. These categories are discussed in more detail in the following sections.

Cab, Body, and

0.38

29

0.39

33

Accessories

Propulsion-related

0.27

21

0.29

25

PMI

0.13

10

0.18

15

Brakes

0.20

16

0.04

3

Frame, Steering,

0.05

4

0.07

6

and Suspension

HVAC

0.07

5

0.09

8

Lighting

0.05

4

0.05

4

Air, General

0.07

5

0.04

3

Axles, Wheels, and

0.04

3

0.01

1

Drive Shaft

Tires

0.04

3

0.01

1

Hydraulics

0.00

0

0.01

1

Total

1.30

100

1.19

100

Table 12. Breakdown of Vehicle System Maintenance Cost per Mile

Percent of Total

Cost per M

ile ($)

Percent of Total

(%)

(%)

System

(Evaluation Period) CNG West Farms

Cost per

Mile ($)

Hybrid Mother Clara Hale

35

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