IC / ^/o. 2 Vf ^7/yy^y 
 
 BUDGET BLREAU 
 
 No. 60-R283.2 
 
 INTERSTATE COMMERCE COM 
 
 TITLE 49— TRANSPORTATION AND RA 
 
 Chapter 1 — Interstate Commerce Commissio 
 
 SUBCHAPTER A— GENERAL RULES AND REGULATIONS 
 
 Part 134 — Signal Failure Reports 
 
 MONTHLY REPORT OF FAILURE OF BLOCK SIGNAL SYSTEMS, INTER- 
 LOCKING, AUTOMATIC TRAIN STOP, TRAIN CONTROL, AND CAB 
 SIGNAL DEVICES, AND OTHER SIMILAR APPLIANCES, METHODS, 
 AND SYSTEMS TO INDICATE OR FUNCTION AS INTENDED 
 
 Order 
 
 At a Session of the Interstate Commerce Commission, Division 3, held at its 
 office in Washington, D. C, on the 18th day of May A. D. 1954. 
 
 The matter of revising Forms 1, 2, and 3 entitled "Signal Failure Report" and 
 the method embodied in the instructions therein set forth being under 
 consideration : 
 
 It appearing, That carriers are presently re<iuired to furnish information on 
 Forms 1 and 2, some of which is no longer needed or necessary, and in order 
 that such information no longer required may be eliminated from said forms 
 and related instructions, 
 
 It is ordered, That the said Forms 1, 2, and 3 be and they are hereby con- 
 solidated and revised in the matter indicated by the following accompanying 
 forms : 
 
 § 134.1 List of forms. 
 
 1. Signal failure report. 
 
 2. Instructions. 
 
 And it is further ordered, That this order shall become effective on the first 
 day of October A. D. 1954. 
 
 ( Sec. 12, 24 Stat. 383, as amended ; 49 U. S. C. 12. Interprets or applies sec. 
 441, 41 Stat. 498, as amended; 49 U. S. C. 26) (2 F. R. 3296, recodification noted 
 at 15F. R. 643.) 
 By the Commission, Division 3. 
 [SEAL] Geobge W. Laird, 
 
 Secretary. 
 INSTRUCTIONS 
 
 1. A report in accordance with the method and form prescribed must be sent 
 to the Interstate Commerce Commission, Bureau of Safety and Service, Wash- 
 ington, D. C, for each month, showing all failures of block-signal systems, inter- 
 locking, automatic train-stop, train-control, and cab-signal devices, and other 
 similar appliances, methods, and systems, to indicate or function as intended, 
 such report to be filed with the Commission within 30 days after the end of the 
 month for which the report is made. 
 
 2. Report shall include all failures of the specified devices on the line of the 
 reporting carrier. 
 
 305566—54 
 
 UNIV. OF FL Lli. 
 
3. The name of .the reporting carrier, the nmnth covered by the report and 
 •the railroad, region, division, system or device, covered by this report should be 
 
 given in the spaces provided. 
 
 4. Under "Classification," and under "False restrictive failures" in columns 
 ], 2, 8, and 4 should be shown the number of false restrictive failures of block- 
 signal systems, interlocking, automatic train stop, train control, and cab signals, 
 and other similar appliances, methods, and systems, respectively, and in column 
 5 the total number of these failures. 
 
 5. A false restrictive failure is a failure of a system, device or appliance to 
 indicate or function as intended which results in greater restriction than is 
 required. 
 
 (5. Under "Classification," and under "False proceed failures" in columns 6, 7, 
 S, and 9 should be shown the number of false proceed failures of block-signal 
 systems, interlocking, automatic train .stop, train control, and cab signals, and 
 other similar appliances, methods, and systems, resi>ectively. and in column 10 the 
 total number of these failures. 
 
 7. A false proceed failure is a failure of a system, device, or appliance to 
 indicate or function as intended which results in less restriction than is 
 required. 
 
 8. Under "Classification," and under "Potential false proceed conditions" in 
 columns 11, 12, 13, and 14 should be shown the number of potential false 
 proceed conditions in block-signal systems, interlocking, automatic train stop, 
 train control, and cab signals, and other similar appliances, methods, and 
 systems, respectively, and in column 15 the total number of these conditions. 
 
 9. Potential false proceed conditions include conditions of apparatus existing 
 when no train is present, under which a false proceed failure would have 
 occurred had a locomotive or train approached or entered a section of track 
 occupied by another train or where the safety of the track was impaired. 
 
 10. Except as set forth in paragraph 11, a failure should not be counted more 
 than once in columns 1, 2, 3, 4, 6, 7, 8, and 9 ; the failure should be classified 
 under the basic system or appliance of which it forms an essential part. For 
 example, assume a broken rail bond within interlocking limits which prevents 
 a home signal from being cleared and causes the automatic block signal in rear 
 to display approach, as well as corresponding indications of a cab-signal system 
 on each train approaching this point. Such failure should be included in column 
 2 under interlocking. 
 
 11. When a condition producing failures extends over a period of more than 24 
 hours, one failure should be reported for the first 24 hours, and an additional 
 failure for each succeeding 24-hour period until necessary repairs are made. 
 Should failures of automatic train-stop, train-control, or cab-signal devices occur 
 on more than one trip due to the same defective condition of locomotive ap- 
 paratus, one failure should be reported for each trip made by the locomotive on 
 which such failures occur until improper condition is corrected. 
 
 12. Under "Remarks" identify the other appliances, methods and systems for 
 which "False restrictive failures" are reported in column 4. Do not report in 
 column 4 failures of traffic-control systems, as such failures should be reported 
 under "Block systems" or "Interlocking." 
 
 13. Under "Description of False Proceed Failures or Potential False Proceed 
 Conditions" : In column 16 show the failures, numbered consecutively by rail- 
 road, region, or division ; in column 17, the date ; in column IS, the number of the 
 locomotive involved (and initials if foreign) if failure involves automatic train- 
 stop, train-control, or cab-signal devices ; in column 19, the signal number, switch 
 
number, roadway or interlocking location ; and in column 20, the kind of failure, 
 whether false proceed, or whether a potential false proceed condition. In column 
 21 show tlie nature and cause of failure, indicating when more than one of the 
 systems, devices and appliances listed is affected by a single failure. See 
 example, paragraph 10. 
 
 14. The date, signature, and title of the leporting officer umst be given on 
 the line provided for that purpose at the bottom of the form. 
 
 l.j. Copies of the prescribed form and instructions will be furnished upon 
 application to the Bureau of Safety and Service. 
 
 16. The following abbreviations may be used in the report: 
 
 A, Automatic. 
 
 AB, Automatic block. 
 
 ACS, Automatic cab signal. 
 
 APB, Ab.solute permissive block. 
 
 ATC, Automatic train control. 
 
 ATS, Automatic train stop, 
 
 CL, Color light. 
 
 CPL, Color position light. 
 
 E, Electric. 
 
 EM, Electromechanical. 
 
 KP, Klectropneumatic. 
 
 FP, False proceed. 
 
 P"R, False restrictive. 
 
 MB, Manual block. 
 
 M, Mechanical. 
 
 PFPC, Potential false proceed condition. 
 
 P, Pneumatic. 
 
 PL, Position light. 
 
 SA, Semiautomatic, 
 
 U S, GOVERNMENT PRINTING OFFICE: 1934 
 
UNIVERSITY OF FLORIDA 
 
 3 1262 08855 6880