American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 85)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-80 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

TO (MPH)

0.0

8.0 9.0 25.0 40.0 45.0 55.0 70.0

0.0 0.0 1.15 1.04 0.96 0.88 0.82 0.78 0.75

8.0 3.30 0.0 2.94 2.94 2.94 2.94 2.94 2.94

9.0 3.30 2.20 0.0 2.94 2.94 2.94 2.94 2.94

25.0 3.30 2.20 2.09 0.0 2.94 2.94 2.94 2.94

40.0 3.30 2.20 2.09 2.01 0.0 2.70 2.70 2.70

45.0 3.30 2.20 2.09 2.01 1.93 0.0 2.59 2.59

55.0 3.30 2.20 2.09 2.01 1.93 1.87 0.0 2.45

(mph)

70.0

3.30 2.20 2.09 2.01 1.93 1.87 1.83 0.0

TABLE 3, SBD OVERSPEED LIMITS

ATP Overspeed

Speed Limit Tolerance

mi/hr mi/hr

70 -0, +3.0

55 -0, +2.5

45 -0, +2.0

40 -0, +2.0

25 -0, +1.5

9 -0, +1.0

8 -0, +1.0

9.4.5.2.2 Train Resistance Factors

A. Track Geometry Factors

Retarding or accelerating force of 20 lb/ton of vehicle weight per percent of

grade, with consideration given to vertical alignment.

Retarding force of 0.8 lb/ton of vehicle weight per degree of horizontal curvature.

B. Vehicle Resistance Factors - Train resistance on level tangent track (to be

considered only during coasting for SBD purposes):

Retarding force in lb, due to bearing friction and resistance proportional to

weight:

= N (116 + 1.3W)

Retarding force in lb, due to rolling friction and resistance proportional to

velocity:

FR2 = N (0.045VW)

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American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 85