B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC (brakes or auxiliary equipment B61H, B61K; point or crossing construction E01B)
Introduced: September 1968
Description
B61L covers railway traffic control systems, signaling mechanisms, and safety devices designed to guide train movements and prevent accidents. This includes automatic and manual signaling systems, interlocking apparatus, level crossing protection, train detection systems, and speed control devices. The classification encompasses both infrastructure-based control technologies and on-board safety equipment that collectively manage train routing, spacing, and operational safety on railway networks.
Title
Titles differ between systems:
IPC: GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
CPC: GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC (brakes or auxiliary equipment B61H, B61K; point or crossing construction E01B)
Full Title
Full titles differ between systems:
GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC (brakes or auxiliary equipment B61H, B61K; point or crossing construction E01B)
Additional Content IPC
Glossary
scotch-block scotch-blocks a wedge to prevent the movement of an opening switch rail of a set of points or of stationary vehicles.
Limiting references
Railway vehicle brakes or other retarding apparatus Derailing or re-railing blocks on the track, and for railway stops, scotch-blocks, track brakes or retarders fixed to the permanent way Detectors indicating the overheating of railway vehicle axle bearings Rail, switch, point or crossing construction Rail joints Electrically insulated rail joints Cattle guards fixed to the permanent way
Of 20 combined children, 16 exist in both systems.
4 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B61L 1/00 Devices along the route controlled by interaction with the vehicle or train (detonators B61L5/20; operation of points or signals by passage of the vehicle B61L11/00, B61L13/00; operation of gates, or gates and signals, by approaching vehicle B61L29/18) IPC+CPC Available in IPC and CPC
- B61L 11/00 Operation of points from the vehicle or by the passage of the vehicle IPC+CPC Available in IPC and CPC
- B61L 13/00 Operation of signals from the vehicle or by the passage of the vehicle +3 CPC IPC+CPC Available in IPC and CPC
- B61L 15/00 Indicators provided on the vehicle or train for signalling purposes +12 CPC IPC+CPC Available in IPC and CPC
- B61L 19/00 Arrangements for interlocking between points and signals by means of a single interlocking device IPC+CPC Available in IPC and CPC
- B61L 2205/00 Communication or navigation systems for railway traffic 2nd only +2 CPC CPC only CPC only
- B61L 23/00 Control, warning or like safety means along the route or between vehicles or trains +2 CPC IPC+CPC Available in IPC and CPC
- B61L 25/00 Recording or indicating positions or identities of vehicles or trains or setting of track apparatus IPC+CPC Available in IPC and CPC
- B61L 27/00 Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor IPC+CPC Available in IPC and CPC
- B61L 3/00 Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal IPC+CPC Available in IPC and CPC
- B61L 5/00 Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals (B61L11/00 takes precedence) IPC+CPC Available in IPC and CPC
- B61L 7/00 Remote control of local operating means for points, signals, or track-mounted scotch-blocks (B61L11/00, B61L13/00 take precedence; interlocking arrangements B61L19/00) IPC+CPC Available in IPC and CPC
- B61L 9/00 Illumination specially adapted for points, form signals, or gates IPC+CPC Available in IPC and CPC
- B61L 99/00 Subject matter not provided for in other groups of this subclass since 2006 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B61,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,749
- CRRC QINGDAO SIFANG COMPANY 2,215
- SIEMENS DE 1,941
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,514
- BYD COMPANY 1,371
- CRRC CHANGCHUN RAILWAY VEHICLES COMPANY 1,205
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 1,165
- CRRC TANGSHAN COMPANY 1,119
- BOMBARDIER TRANSPORTATION DE 1,001
- SOUTHWEST JIAOTONG UNIVERSITY 958
Top Applicants (CPC)
Class B61,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,967
- SIEMENS DE 2,133
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
- CRRC QINGDAO SIFANG COMPANY 1,100
- BOMBARDIER TRANSPORTATION DE 1,085
- MITSUBISHI ELECTRIC CORPORATION JP 880
- BYD COMPANY 821
- KRRI KR 761
- HITACHI JP 752
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 721