Visual warning system for worker safety on roadside work-zones.
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2016-08-01
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Abstract:Growing traffic on US roadways and heavy construction machinery on road construction sites pose a critical safety ; threat to construction workers. This report summarizes the design and development of a worker safety system using ; Dedicated Short Range Communication (DSRC) to specifically address the workers’ safety for the workers ; working around the heavy machinery. The proposed system has dual objectives. First objective is to improve ; workers’ safety by providing visual guidance to the operators of the construction vehicles about the workers’ ; presence in the vicinity. This visual guidance keeps the operators of the heavy machinery well informed about the ; whereabouts of the workers in close proximity while operating the heavy vehicle. The second objective of the ; proposed system is to improve the work-zone traffic mobility by dynamically posting suitable speed limits and ; other warning messages on the DSRC-equipped variable message signs (VMSs) depending on the workers’ ; presence in an active work-zone to appropriately warn the drivers of the passing-by vehicles. ; A prototype was developed and field tests were conducted to demonstrate and evaluate the performance of the ; proposed system. The evaluation test results show that the system can successfully show the presence of workers ; around a construction vehicle on an Android tablet with acceptable distance (1.5 – 2 m) and direction (15 – 20 ; degrees) accuracies. Furthermore, the test results show that a DSRC-equipped VMS can successfully post a suitable ; speed limit corresponding to the presence of workers in its vicinity.
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Main Document Checksum:urn:sha256:c1edef790572ec0e7c10fceb9cbc40c8a627626d3181a04d530c3a62e5127e18