American Audio VELOCITY - REV 4-05 Operations Instructions download pdf (Page 31)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-26 Revision 4: 05/09/12

Metro Baseline Re-Baseline: 04/29/10

• Acceleration

Light Rail Vehicle

Nominal initial 3.0 MPHPS +

5% for car weights AW-0 to AW2

Heavy Rail Vehicle

Nominal initial rate 3.0

mphps +

5% for car weight

AW0 to AW2

• Braking

Light Rail Vehicle

AWO to Full Load - In accordance with CPUC G.O. 143A, 4.03 listed

in Table 9.1 for manual operation.

Heavy Rail Vehicle

AWO to AW3 3.0

mphps +

At any given entry speed below overspeed limit, the emergency

brake rates shall be within the range specified (Table 9.1) and shall

be calculated by averaging the average deceleration rates (v/t) from

several stops made in opposite directions on the same section of

dry, level tangent track for all conditions of loading (AWO to Full

Load). The velocity (v is the velocity that exists after the maximum

mode change dead time has elapsed and the brake rate has

increased to the command value. The time (t) is the elapsed time

from the point where velocity has attained a value equal to "v" until

the car has stopped.

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American Audio VELOCITY - REV 4-05 Operations Instructions Page 31