Patent ID: 11866077
Assignee: HARSCO TECHNOLOGIES LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 19:
20. A railway safety system, comprising:
a track protection and warning system having:
a first electrical communication device disposed at a control center, the first electrical communication device configured to define one or more boundaries of a work zone;
a second electrical communication device configured to be disposed within the work zone and in electronic communication with the first electrical communication device;
a plurality of third electrical communication devices configured to be carried by rail workers within the work zone, each of the third electrical communication devices configured to be in electronic communication with the second electrical communication device;

wherein:
the second electrical communication device is configured to determine a location of:
a first rail vehicle operating outside the work zone; and
a second rail vehicle operating within the work zone; and

the warning system is configured to generate:
a first warning signal based on a determination that a distance between the first rail vehicle and the boundaries of the work zone is less than a first threshold distance, the first warning signal configured to initiate an alarm of the plurality of third electrical communication devices; and
a second warning signal based on a determination that a distance between the second rail vehicle and the boundaries of the work zone is less than a second threshold distance, the second warning signal configured to initiate an alarm of vehicle unit of the second rail vehicle.