Establishment of Track Quality Index Standard Recommendations for Beijing Metro

Table 3

The 70th percentiles of track quality quantities over each track.

#	Track	Surface	Alignment	Gauge	Cross level	Twist	TQI
1	10# right	2.20 2	2.09 2	1.31	1.80	1.49	13.19
2	10# left	2.07 2	1.99 2	1.17	1.60	1.23	12.12
3	East 13# upgoing	2.13 2	1.49 2	1.15	1.74	1.61	11.72
4	East 13# downgoing	2.03 2	1.56 2	1.08	1.40	1.32	10.97
5	West 13# upgoing	2.20 2	1.91 2	1.50	1.76	1.42	12.90
6	West 13# downgoing	2.05 2	1.64 2	1.40	1.78	1.36	11.92
7	1# upgoing	2.37 2	2.19 2	1.59	1.54	1.55	13.81
8	1# downgoing	2.61 2	2.08 2	1.55	1.67	1.69	14.29
9	2# inner circle	2.29 2	2.06 2	1.65	2.64	1.82	14.79
10	2# outer circle	2.02 2	2.26 2	1.63	2.56	1.63	14.38
11	5# upgoing	1.84 2	2.12 2	1.14	1.43	1.28	11.77
12	5# downgoing	2.00 2	2.24 2	1.14	1.52	1.27	12.41
13	Ba-Tong upgoing	2.27 2	1.68 2	1.26	1.36	1.09	11.61
14	Ba-Tong downgoing	2.38 2	1.85 2	1.28	1.36	1.21	12.31