Page 343 - IRSEM_Main Book

Para No. 13.3.5 Annexure: 13-A1
Braking Distance Calculation for TCAS

RDSO Motive Power Dte. Data

Type of braking : Service brake

Formation: WAG7+59 BOX wagon Loaded

Speed Reduction Range
Current
Speed 90 80 70 60 50 40 30 20 10 0 Kmph
of Train Kmph Kmph Kmph Kmph Kmph Kmph Kmph Kmph Kmph i.e. SBD
in kmph

100 590 m (*91.6) 826 m (81.4) 988 m (70.4) 1093 m (61.2) 1209 m (49.9) 1277 m (40.9) 1332 m (30.9) 1381 m (21.9) 1400 m (10.4) 1404 m (4.0)
90 574 m (80.4) 776 m (69.2) 879 m (60.7) 994 m (48.6) 1062 m (39.5) 1116 m (30.4) 1163 m (18.4) 1182 m (9.5) 1195 m (0.5)

80 508 m (70.3) 683 m (59.5) 770 m (51.0) 863 m (38.9) 916 m (29.9) 953 m (20.9) 975 m (11.9) 982 m (0.0)

70 442 m (60.5) 590 m (49.7) 661 m (41.3) 733 m (29.3) 769 m (20.3) 794 m (8.3) 797 m (2.4)

60 376 m (50.7) 496 m (40.0) 566 m (28.6) 602 m (19.6) 622 m (10.6) 627 m (1.7)

50 310 m (40.8) 403 m (30.2) 442 m (21.9) 466 m (12.9) 475 m (1.0)

40 244 m (31.0) 310 m (20.0) 366 m (9.1) 339 m (0.2)

30 188 m (19.3) 216 m (10.6) 222 m (2.3)

20 111 m (11.2) 123 m (0.7)

10 45 m (1.3)

* Explanatory note on understanding above table : During speed trials, on application of Service brake on a Train running at 100 kmph, after travelling a
distance of 590 meters, Train`s speed got reduced to 91.6 kmph.

Chapter 13: ATP, ETCS, IRATP (TCAS) & TMS Page 296 of 535