Through partnership with the Federal Transit Administration (FTA), the Sacramento Regional Transit District (SacRT) conducted a demonstration test of a secondary warning device for roadway workers in 2018. The commercially available secondary warning system consists of a roadway worker protection (RWP) system mounted in a rail vehicle and a personal alert device (PAD) worn by a roadway workers. This secondary RWP system design provides a visual and audible advance warning alert to train operators of workers ahead and a visual and audible advance warning to alert wayside track workers of approaching trains. A second phase of the project implemented the Employee in Charge Software System (EICSS) that uses smartphone technology to validate and authorize roadway worker access to specific sections of track.
System effectiveness, including unusual occurrences or comments and system acceptance, was measured in terms of work zone intrusion rates and employee survey responses. Unusual occurrences or comments are based on SacRT's daily control log and related dispatcher or roadway worker reports. A total of 19 EICSS and PAD survey responses were collected.
Based on the system effectiveness evaluation, the warning system demonstrated notable positive system perceptions and acceptance of use by train operators, right-of-way workers, and other stakeholders: