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16-16  Basic Statistics on National Railways in Operation
Item
1985
1990
1995
2000
2003
2004
Length of Railways in Operation      (km)
52119
53378
54616
58656
60446
61015
In Formal Operation                 
49433
50310
50866
51262
56238
56822
In Temporary Operation              
2686
3068
3750
7394
4208
4193
Proportion of the Length in Formal    
94.8
94.3
93.1
87.4
93.0
93.1
Operation                            
        
        
        
Double-Tracking Length                    (km)
9989
13024
16909
21408
23702
23841
As Percentage of the Length of Railways  
19.2
24.4
31.0
36.5
39.2
39.1
in Operation                    
        
        
        
Length of Electrified Railways          (km)
4151
6941
9703
14864
18060
18562
As Percentage of Railways in Operation
8.0
13.0
17.8
25.3
29.9
30.4
Length of Diesel Engine Routes        (km)
10822
16097
24749
39497
42387
42453
As Percentage of Railways in Operation
20.8
30.2
45.3
67.3
70.1
69.6
Length under Centralized Traffic Control (km)
1307
1169
1226
1200
1842
1842
As Percentage of Railways in Operation
2.5
2.2
2.2
2.0
3.1
3.0
Automatic Blocking Length              (km)
6921
10370
12910
18318
21920
22724
As Percentage of Railways in Operation
13.3
19.4
23.6
31.2
36.3
37.2
Semi-automatic Blocking Length     (km)
42625
38832
40859
41695
39522
39335
As Percentage of Railways in Operation
81.8
72.7
74.8
71.1
65.4
64.5
Length of Continuous Welded Rail (km)
10439
14644
21854
29975
39497
43198
As Percentage of the Trunk Lines      
16.7
21.7
40.0
51.1
46.0
70.8
Number of Stations with Electric      
2320
3535
4587
5232
5204
5340
Interlocking                                   (unit)
        
        
        
As Percentage of Railways Stations    
46.9
62.9
73.9
90.4
92.9
95.1
in Operation                         
                                    
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