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16-16  Basic Statistics on National Railways in Operation
  Item
1985
1990
1995
2000
2002
2003
  Length of Railways in Operation     (km)
52119
53378
54616
58656
59530
60446
  In Formal Operation                 
49433
50310
50866
51262
54422
56238
  In Temporary Operation              
2686
3068
3750
7394
5108
4208
  Proportion of the Length in Formal    
94.8
94.3
93.1
87.4
91.4
93.0
  Operation                            
        
        
        
  Double-Tracking Length              (km)
9989
13024
16909
21408
23058
23702
  As Percentage of the Length of Railways  
19.2
24.4
31.0
36.5
38.7
39.2
  in Operation                    
        
        
        
  Length of Electrified Railways  (km)
4151
6941
9703
14864
17409
18060
  As Percentage of Railways in Operation
8.0
13.0
17.8
25.3
29.2
29.9
  Length of Diesel Engine Routes  (km)
10822
16097
24749
39497
42121
42387
  As Percentage of Railways in Operation
20.8
30.2
45.3
67.3
70.8
70.1
  Length under Centralized Traffic Control   (km)
1307
1169
1226
1200
1401
1842
  As Percentage of Railways in Operation
2.5
2.2
2.2
2.0
2.4
3.1
  Automatic Blocking Length           (km)
6921
10370
12910
18318
20682
21920
  As Percentage of Railways in Operation
13.3
19.4
23.6
31.2
34.7
36.3
  Semi-automatic Blocking Length  (km)
42625
38832
40859
41695
39990
39522
  As Percentage of Railways in Operation
81.8
72.7
74.8
71.1
67.2
65.4
  Length of Continuous Welded Rail  (km)
10439
14644
21854
29975
35967
39497
  As Percentage of the Trunk Lines      
16.7
21.7
40.0
51.1
42.7
46.0
  Number of Stations with Electric      
2320
3535
4587
5232
5278
5204
  Interlocking                    (unit)
        
        
        
 
  As Percentage of Railways Stations    
46.9
62.9
73.9
90.4
91.8
92.9
  in Operation                         
        
        
        
        
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