Abstract
The present study aims to develop a prototype of large-size movable barriers to protect roadside workers from incoming vehicles to the road work area with the following functions: maximization of work space in the right and left directions, convenient mobility, and minimization of impact without modification of the inside of movable barriers into traffic lanes and perform safety performance assessment on passengers through full scale crash tests. The large movable barrier was divided into folder type and telescope type and the development stage was now at the prototype phase. A full scale crash test was conducted prior to certification test at a level of 90%. The full scale crash test result showed that both types of folder type movable barrier and telescope type movable barrier satisfied the standard of the passenger safety performance evaluation at a level of 90%.
Highlights
The Highway Safety Manual(HSM, 2010) in the USA suggested that traffic accidents occur due to three factors: human factors(93%), vehicle factors(34%) and roadway/environment factors(13%) [1]
More workers were dead or injured fro m 2008 to 2013 due to worse traffic environment against road workers than that of general national roads, which resulted in 56 fatal casualties and 15 injuries of general drivers and 47 deaths and 15 injuries of road workers (103 deaths and 30 injuries in total)
The full scale crash test result showed that both types of folder type and teles cope type movable barrier satisfied the standard of the passenger safety performance evaluation at a level of 90%
Summary
The Highway Safety Manual(HSM, 2010) in the USA suggested that traffic accidents occur due to three factors: human factors(93%), vehicle factors(34%) and roadway/environment factors(13%) [1]. The nu mber o f casualties during road works is 27 out of 583 workers in the regional office in the Ministry of Land, Transport and Maritime who work for maintenance of general national roads as of 2012. This number means appro ximately 5% of the road workers were dead or in jured, which was much higher proportion of casualties than that of fire -fighting officers (0.97%) classified as one of the high risk groups. The present study aims to develop a prototype of large-size movable barriers to protect roadside workers fro m inco ming vehicles to the road work area with the following functions: maximizat ion of work space in the right and left directions, convenient mobility, and minimizat ion of impact without modification of the inside of movable barriers into traffic lanes and perform safety performance assessment on passengers through full scale crash tests
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