American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 83)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-78 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

emergency brakes are fully applied and the train begins to decelerate at the

worst-case net braking rate of 1.7 mi/hr/sec to the stopping point. The braking

rate shall be 1.7 mi/hr/sec for the entire interval. Adjust deceleration for track

geometry.

7. Vehicle Overhang Distance - The distance comprising that portion of the leading

train extending behind the center line of the rear-most axle, plus that part of the

following train extending forward of the center line of the front-most axle for a

total of 14 ft.

8. Vehicle Characteristics - In the SBD design, use the following vehicle

characteristics in all combinations to determine the longest braking distance:

Length: Two or six cars.

Train Weight: AW0 (78,000 lbs.) or AW3 (128,000 lbs.)

TABLE 1, ACCELERATION RATES

Velocity

(MPH)

Ideal Train

Acceleration

ft/s/s

SBD Model

Acceleration

ft/s/s

1 2.7740 3.0514

2 2.9330 3.2263

3 4.0740 4.4814

4 4.0740 4.4814

5 4.0740 4.4814

6 4.0740 4.4814

7 4.0740 4.4814

8 4.0740 4.4814

9 4.0740 4.4814

10 4.0740 4.4814

11 4.0740 4.4814

12 4.0740 4.4814

13 4.0740 4.4814

14 4.0740 4.4814

15 4.0740 4.4814

16 4.0740 4.4814

17 4.0740 4.4814

18 4.0740 4.4814

19 4.0740 4.4814

20 4.0740 4.4814

21 4.0740 4.4814

22 4.0740 4.4814

23 4.0740 4.4814

24 4.0740 4.4814

25 4.0740 4.4814

26 3.9370 4.3307

27 3.8010 4.1811

28 3.6650 4.0315

29 3.5290 3.8819

30 3.3900 3.7290

31 3.2730 3.6003

32 3.1660 3.4826

33 3.0580 3.3638

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