GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC

Introduced: September 1968

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: RAILWAYS
Subclass:: GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC

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.

Additional Content

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

Related Keywords

preventing ACCIDENTS on railwaysrailway level CROSSINGS signalling and safety arrangementsDEPARTURE indicatorsDESTINATION indicatorsINTERLOCKING in railway signallinginterlocking of railway signalsoperating railway POINTScontrolling RAILWAY(S),RAILROAD(S) trafficRAILWAY(S),RAILROAD(S) signallingsafety of RAILWAY(S),RAILROAD(S) traffic sand tracks for RAILWAY(S),RAILROAD(S)railway SIGNALLINGcontrolling SWITCH(ES) for railway trackscontrolling TRAFFIC on railwayssignalling for railway TRAFFICsignalling peculiar to railway VEHICLES

16 direct subcodes

Child Classifications

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B61L 1/00 Devices along the route controlled by interaction with the vehicle or train
B61L 11/00 Operation of points from the vehicle or by the passage of the vehicle
B61L 13/00 Operation of signals from the vehicle or by the passage of the vehicle
B61L 15/00 Indicators provided on the vehicle or train for signalling purposes
B61L 17/00 Switching systems for classification yards
B61L 19/00 Arrangements for interlocking between points and signals by means of a single interlocking device
B61L 21/00 Station blocking between signal boxes in one yard
B61L 23/00 Control, warning or like safety means along the route or between vehicles or trains
B61L 25/00 Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
B61L 27/00 Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
B61L 29/00 Safety means for rail/road crossing traffic
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
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
B61L 7/00 Remote control of local operating means for points, signals, or track-mounted scotch-blocks
B61L 9/00 Illumination specially adapted for points, form signals, or gates
B61L 99/00 Subject matter not provided for in other groups of this subclass

Top Applicants

Top 10 applicants by patent filingsfor 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