Patent ID: 11866078
Assignee: HARSCO TECHNOLOGIES LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 9:
10. A portable roadway protection system comprising:
a first portable device configured to be carried by a first rail worker, the first portable device including an alert button and a first wireless transceiver;
a plurality of second portable devices, each including a second wireless transceiver configured to communicate with the first wireless transceiver;
a wayside device in communication with the first and second wireless transceivers;
where:
based on activation of the alert button, the first portable device is configured to transmit an alert signal to each of the plurality of second portable devices; and
based on receiving the alert signal, the plurality of second portable devices are configured to generate at least one of an audible, visual, or haptic alert;
the wayside device is configured to determine a respective distance between the first portable device and each of the plurality of second portable devices.