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Train Dispatching

Despite advances in bigger and better locomotives, the addition of automatic block signals, few railroads upgraded their communication links between dispatchers and their network of operators for the transmission and verification of train orders. This is a comparison of the number of miles dispatched using telegraph and telephone between the years 1921 and 1931. There may be some overlap in reporting as some railroads converted to telephone dispatching, but kept the telegraph as a backup system.

 1921 1931 
 telegraphtelephonetelegraphtelephone
AT&SF3,2048,1142,41312,304
CB&Q4,9194,1064,0514,924
CMSP&P5,4344,5674,9325,463
CRI&P4,1182,7414,4003,233
C&S8442340452
D&RG1,773831  
 D&SL*255255  
D&RGW  1,713587
EP&SW475515  
FW&DC660  657
GN2,7284,9632,5513,404
KCS824 7488
MKT3201,2651671,134
MKTofTX605942381837
MP4,7442,0832,4514,523
NP3,3712,7503,3312,967
QA&P 83 110
SLSF2,9942,129;2,9752,190
SP&S  541 
SSW1,4491241,185425
SP4,9602,2563,4426,165
T&NO2,2951,1081,2923,305
T&P*1,8328094551,620
UP2,4121,1462,1231,586
 LA&SL1,037 218801
 OSL1,4057661,0031,279
 OWRN1,162640805802
WP*1,0151,01592948

*D&SL total mileage in 1921 was 255.
T&P increased telephone use by 209 miles in 1920. T&P total mileage in 1921 was 1,832.
WP total mileage in 1921 was 1,015.

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